Dev APIs / SMS, voice and SendGrid email / Twilio

Twilio

SEV 2 · BLEEDING · 2d 13h

Since Sep 2026 · 75 incidents · status.twilio.com · checked just now

User reportsVisitors who said it's down for them, per hour over 24 hours. Not from the status page. Never counted in grades.
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GradeDLast 45 days
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Happening now
Oct 27, 2026ongoingSEV 2
Voice Call Failures From Twilio Phone Numbers to GermanyVoice calls from Twilio numbers to German mobile and fixed networks are failing; the update does not say how many calls are hit.AI-graded · one location · CARRIER NETWORK - Voice, Europe
Why this grade
  1. RULES · SEV 2
    Sev 2 because CARRIER NETWORK - Voice, Europe had degraded performance
  2. CLAUDE · SEV 2 · REGIONAL · MEDIUM CONFIDENCE
    Voice calls from Twilio numbers to German mobile and fixed networks are failing; the update does not say how many calls are hit.
  3. Claude Haiku 5.5 · prompt v11 · Oct 27, 2026 · Raw record
1 update
  1. 09:00 UTC · investigating
    Twilio customers may be experiencing voice call failures from Twilio Phone Numbers to network subscribers in Germany. Our team is actively investigating this issue. We will provide another update in 1 hour or as soon as more information becomes available.
Source
Oct 27, 2026ongoingSEV 2
Voice Call Failures From a Subset of Twilio Phone Numbers to Multiple Networks in GermanyVoice calls from a subset of Twilio numbers failed to several German networks; still under investigation at posting.AI-graded · one location · CARRIER NETWORK - Voice, Europe
Why this grade
  1. RULES · SEV 2
    Sev 2 because CARRIER NETWORK - Voice, Europe had degraded performance
  2. CLAUDE · SEV 2 · REGIONAL · MEDIUM CONFIDENCE
    Voice calls from a subset of Twilio numbers failed to several German networks; still under investigation at posting.
  3. Claude Haiku 5.5 · prompt v11 · Oct 27, 2026 · Raw record
1 update
  1. 08:37 UTC · investigating
    Twilio customers may be experiencing voice call failures from a subset of Twilio Phone Numbers to network subscribers on multiple networks in Germany. Our team is actively investigating this issue. We will provide another update in 1 hour or as soon as more information becomes available.
Source
Oct 26, 2026ongoingSEV 2
SMS Delivery Failures and Delays Between a Subset of Twilio Phone Numbers and Multiple Networks in BrazilSome Twilio Brazil phone numbers experienced SMS delivery failures and delays to subscribers on multiple Brazilian networks. Twilio identified the cause and is working on a fix; no resolution has been posted yet.AI-graded · one location · CARRIER NETWORK - SMS, Latin America
Why this grade
  1. RULES · SEV 2
    Sev 2 because CARRIER NETWORK - SMS, Latin America had degraded performance
  2. CLAUDE · SEV 2 · SUBSET · MEDIUM CONFIDENCE
    SMS delivery from a subset of Twilio Brazil numbers to multiple Brazilian networks failed or was delayed; ongoing, not yet resolved.
  3. Claude Haiku 5.5 · prompt v11 · Oct 27, 2026 · Raw record
6 updates
  1. 23:55 UTC · investigating
    Twilio customers may be experiencing SMS delivery failures and delays between a subset of Twilio Phone Numbers and network subscribers on multiple networks in Brazil. Our team is actively investigating this issue. We will provide another update in 1 hour or as soon as more information becomes available.
  2. 00:03 UTC · identified
    Twilio customers may be experiencing SMS delivery failures and delays between a subset of Twilio Brazil Phone Numbers and network subscribers on multiple networks in Brazil. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 1 hour or as soon as more information becomes available.
  3. 00:05 UTC · identified
    Twilio customers may be experiencing SMS delivery failures and delays between a subset of Twilio Brazil Phone Numbers and multiple networks in Brazil. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 1 hour or as soon as more information becomes available.
  4. 01:05 UTC · identified
    Twilio customers may be experiencing SMS delivery failures between a subset of Twilio Phone Numbers and network subscribers on multiple networks in Brazil. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 2 hours or as soon as more information becomes available.
  5. 03:11 UTC · identified
    Twilio customers may be experiencing SMS delivery delays and failures between a subset of Twilio Phone Numbers and network subscribers on multiple networks in Brazil. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 4 hours or as soon as more information becomes available.
  6. 07:17 UTC · identified
    Twilio customers may be experiencing SMS delivery failures and delays between a subset of Twilio Phone Numbers and network subscribers on multiple networks in Brazil. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 8 hours or as soon as more information becomes available.
Source
Oct 26, 2026ongoingSEV 2
SMS Delivery Delays From a Subset of Twilio Short Codes to Docomo Pacific United StatesCustomers sending SMS through a subset of Twilio Short Codes saw delivery delays and some failures to Docomo Pacific subscribers in the United States. Twilio identified the cause and is working on a fix; the incident is still open with no resolution time given.AI-graded · one model or feature · CARRIER NETWORK - SMS Short Code, North America
Why this grade
  1. RULES · SEV 2
    Sev 2 because CARRIER NETWORK - SMS Short Code, North America had degraded performance
  2. CLAUDE · SEV 2 · SINGLE · MEDIUM CONFIDENCE
    SMS from a subset of Twilio Short Codes to Docomo Pacific subscribers in the US is delayed and sometimes failing; other carriers are unaffected.
  3. Claude Haiku 5.5 · prompt v11 · Oct 27, 2026 · Raw record
5 updates
  1. 19:50 UTC · investigating
    Twilio customers may be experiencing SMS delivery delays and failures from a subset of Twilio Short Codes to Docomo Pacific network subscribers in the United States. Our team is actively investigating this issue. We will provide another update in 1 hour or as soon as more information becomes available.
  2. 19:57 UTC · identified
    Twilio customers may be experiencing SMS delivery delays and failures from a subset of Twilio Short Codes to Docomo Pacific network subscribers in the United States. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 1 hour or as soon as more information becomes available.
  3. 20:57 UTC · identified
    Twilio customers may be experiencing SMS delivery delays from a subset of Twilio Short Codes to Docomo Pacific network subscribers in the United States. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 2 hours or as soon as more information becomes available.
  4. 22:58 UTC · identified
    Twilio customers may be experiencing SMS delivery delays from a subset of Twilio Short Codes to Docomo Pacific network subscribers in the United States. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 4 hours or as soon as more information becomes available.
  5. 03:04 UTC · identified
    Twilio customers may be experiencing SMS delivery delays from a subset of Twilio Short Codes to Docomo Pacific network subscribers in the United States. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 8 hours or as soon as more information becomes available.
Source
Oct 26, 2026ongoingSEV 2
MMS Delivery Delays and Failures from a Subset of Twilio Long Codes to Cellcom United StatesSome Twilio long-code MMS messages to Cellcom United States subscribers were delayed or failed starting 2026-10-26 20:29 UTC. Cause identified as carrier-side; recovery observed at 06:58 UTC on 2026-10-27 and monitoring continues.AI-graded · one model or feature · CARRIER NETWORK - MMS Long Code, North America +1
Why this grade
  1. RULES · SEV 2
    Sev 2 because CARRIER NETWORK - MMS Long Code, North America had degraded performance
  2. CLAUDE · SEV 2 · SINGLE · MEDIUM CONFIDENCE · BACK AFTER 10H 30M
    MMS delivery delayed and failing from a subset of Twilio long codes to Cellcom US subscribers; other carriers unaffected.
  3. Claude Haiku 5.5 · prompt v11 · Oct 27, 2026 · Raw record
7 updates
  1. 20:29 UTC · investigating
    Twilio customers may be experiencing MMS delivery delays and failures from a subset of Twilio Long Codes to Cellcom network subscribers in the United States. Our team is actively investigating this issue. We will provide another update in 1 hour or as soon as more information becomes available.
  2. 20:34 UTC · identified
    Twilio customers may be experiencing MMS delivery delays and failures from a subset of Twilio Long Codes to Cellcom network subscribers in the United States. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 1 hour or as soon as more information becomes available.
  3. 21:34 UTC · identified
    Twilio customers may be experiencing MMS delivery delays and failures from a subset of Twilio Long Codes to Cellcom network subscribers in the United States. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 2 hours or as soon as more information becomes available.
  4. 23:35 UTC · identified
    Twilio customers may be experiencing MMS delivery delays and failures from a subset of Twilio Long Codes to Cellcom network subscribers in the United States. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 4 hours or as soon as more information becomes available.
  5. 03:35 UTC · identified
    Twilio customers may be experiencing MMS delivery delays and failures from a subset of Twilio Long Codes to Cellcom network subscribers in the United States. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 8 hours or as soon as more information becomes available.
  6. 06:58 UTC · monitoring
    We have observed a recovery in MMS delivery from a subset of Twilio Long Codes to Cellcom network subscribers in the United States and are monitoring service stability. We will provide another update in 2 hours or as soon as more information becomes available.
  7. 08:59 UTC · monitoring
    We have observed a recovery in MMS delivery from a subset of Twilio Long Codes to Cellcom network subscribers in the United States and are monitoring service stability. We will provide another update in 4 hours or as soon as more information becomes available.
Source
Oct 26, 2026ongoingSEV 2
SMS Delivery Delays and Failures from Twilio to Mauritel MauritaniaTwilio SMS messages to Mauritel subscribers in Mauritania experienced delivery delays and failures, with delayed delivery receipts. The cause was identified, and the update history shows no resolution yet.AI-graded · one location · CARRIER NETWORK - SMS, Middle East & Africa
Why this grade
  1. RULES · SEV 2
    Sev 2 because CARRIER NETWORK - SMS, Middle East & Africa had degraded performance
  2. CLAUDE · SEV 2 · REGIONAL · MEDIUM CONFIDENCE
    SMS delivery to Mauritel subscribers in Mauritania was delayed and failing; delivery receipts were also late. Limited to one carrier in one country.
  3. Claude Haiku 5.5 · prompt v11 · Oct 27, 2026 · Raw record
6 updates
  1. 14:20 UTC · investigating
    Twilio customers may be experiencing SMS delivery receipt delays and SMS delivery failures from Twilio to Mauritel network subscribers in Mauritania. Our team is actively investigating this issue. Message delivery may succeed, but delivery receipts may be delayed. We will provide another update in 1 hour or as soon as more information becomes available.
  2. 14:39 UTC · identified
    Twilio customers may be experiencing SMS delivery delays and failures from Twilio to Mauritel network subscribers in Mauritania. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 1 hour or as soon as more information becomes available.
  3. 15:39 UTC · identified
    Twilio customers may be experiencing SMS delivery delays and failures from Twilio to Mauritel network subscribers in Mauritania. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 2 hours or as soon as more information becomes available.
  4. 17:40 UTC · identified
    Twilio customers may be experiencing SMS delivery delays and failures from Twilio to Mauritel network subscribers in Mauritania. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 4 hours or as soon as more information becomes available.
  5. 21:45 UTC · identified
    Twilio customers may be experiencing SMS delivery delays and failures from Twilio to Mauritel network subscribers in Mauritania. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 8 hours or as soon as more information becomes available.
  6. 05:51 UTC · identified
    Twilio customers may be experiencing SMS delivery delays and failures from Twilio to Mauritel network subscribers in Mauritania. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 16 hours or as soon as more information becomes available.
Source
Oct 26, 2026ongoingSEV 2
Voice Call Failures from Twilio Phone Numbers to RomaniaTwilio voice calls from Twilio Phone Numbers to Digi Mobil subscribers in Romania failed from 13:09 UTC on 26 October. The cause was identified and a fix was in progress; the incident was still open with no resolution time given in the final update.AI-graded · one location · CARRIER NETWORK - Voice, Europe
Why this grade
  1. RULES · SEV 2
    Sev 2 because CARRIER NETWORK - Voice, Europe had degraded performance
  2. CLAUDE · SEV 2 · REGIONAL · MEDIUM CONFIDENCE
    Voice calls from Twilio numbers to Digi Mobil subscribers in Romania failed; other destinations were not described as affected.
  3. Claude Haiku 5.5 · prompt v11 · Oct 27, 2026 · Raw record
6 updates
  1. 13:09 UTC · investigating
    Twilio customers may be experiencing voice call failures from Twilio Phone Numbers to Digi Mobil network subscribers in Romania. Our team is actively investigating this issue. We will provide another update in 1 hour or as soon as more information becomes available.
  2. 13:31 UTC · identified
    Twilio customers may be experiencing voice call failures from Twilio Phone Numbers to Digi.Mobil network subscribers in Romania. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 1 hour or as soon as more information becomes available.
  3. 14:34 UTC · identified
    Twilio customers may be experiencing voice call failures from Twilio Phone Numbers to Digi.Mobil network subscribers in Romania. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 2 hours or as soon as more information becomes available.
  4. 16:40 UTC · identified
    Twilio customers may be experiencing voice call failures from Twilio Phone Numbers to network subscribers in Romania. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 4 hours or as soon as more information becomes available.
  5. 20:40 UTC · identified
    Twilio customers may be experiencing voice call failures from Twilio Phone Numbers to network subscribers in Romania. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 8 hours or as soon as more information becomes available.
  6. 04:43 UTC · identified
    Twilio customers may be experiencing voice call failures from Twilio Phone Numbers to Digi.Mobil network subscribers in Romania. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 16 hours or as soon as more information becomes available.
Source
Oct 24, 2026ongoingSEV 2
MMS Delivery Delays From a Subset of Twilio Long Codes to C-Spire United StatesSome MMS messages sent via a subset of Twilio long codes, short codes and toll-free numbers were delivered late to C-Spire subscribers in the United States. The cause was identified, and a recovery was observed on 27 October; monitoring continued.AI-graded · one location · CARRIER NETWORK - MMS Long Code, North America +2
Why this grade
  1. RULES · SEV 2
    Sev 2 because CARRIER NETWORK - MMS Long Code, North America had degraded performance
  2. CLAUDE · SEV 2 · REGIONAL · HIGH CONFIDENCE
    MMS messages from a subset of Twilio numbers to C-Spire subscribers in the US were delayed for about 60 hours; other carriers were not reported affected.
  3. Claude Haiku 5.5 · prompt v11 · Oct 27, 2026 · Raw record
13 updates
  1. 19:28 UTC · investigating
    Twilio customers may be experiencing MMS delivery delays from Twilio to C-Spire network subscribers in the United States. Our team is actively investigating this issue. We will provide another update in 1 hour or as soon as more information becomes available.
  2. 20:29 UTC · investigating
    Twilio customers may be experiencing MMS delivery delays from Twilio to C-Spire network subscribers in the United States. Our team is actively investigating this issue. We will provide another update in 2 hours or as soon as more information becomes available.
  3. 22:30 UTC · investigating
    Twilio customers may be experiencing MMS delivery delays from Twilio to C-Spire network subscribers in the United States. Our team is actively investigating this issue. We will provide another update in 4 hours or as soon as more information becomes available.
  4. 02:36 UTC · investigating
    Twilio customers may be experiencing MMS delivery delays from Twilio to C-Spire network subscribers in the United States. Our team is actively investigating this issue. We will provide another update in 8 hours or as soon as more information becomes available.
  5. 10:38 UTC · investigating
    Twilio customers may be experiencing MMS delivery delays from Twilio to C-Spire network subscribers in the United States. Our team is actively investigating this issue. We will provide another update in 16 hours or as soon as more information becomes available.
  6. 02:44 UTC · investigating
    Twilio customers may be experiencing MMS delivery delays from Twilio to C-Spire network subscribers in the United States. Our team is actively investigating this issue. We will provide another update in 24 hours or as soon as more information becomes available.
  7. 07:02 UTC · identified
    Twilio customers may be experiencing MMS delivery delays from a subset of Twilio Longcodes to C-Spire network subscribers in the United States. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 1 hour or as soon as more information becomes available.
  8. 08:09 UTC · identified
    Twilio customers may be experiencing MMS delivery delays from a subset of Twilio Longcodes to C-Spire network subscribers in the United States. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 2 hours or as soon as more information becomes available.
  9. 10:12 UTC · identified
    Twilio customers may be experiencing MMS delivery delays from a subset of Twilio Longcodes to C-Spire network subscribers in the United States. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 4 hours or as soon as more information becomes available.
  10. 14:13 UTC · identified
    Twilio customers may be experiencing MMS delivery delays from a subset of Twilio Longcodes to C-Spire network subscribers in the United States. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 8 hours or as soon as more information becomes available.
  11. 22:20 UTC · identified
    Twilio customers may be experiencing MMS delivery delays from a subset of Twilio Phone Numbers to C-Spire network subscribers in the United States. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 16 hours or as soon as more information becomes available.
  12. 05:58 UTC · monitoring
    We have observed a recovery in MMS delivery from a subset of Twilio Long Codes to C-Spire network subscribers in the United States and are monitoring service stability. We will provide another update in 2 hours or as soon as more information becomes available.
  13. 08:04 UTC · monitoring
    We have observed a recovery in MMS delivery from a subset of Twilio Long Codes to C-Spire network subscribers in the United States and are monitoring service stability. We will provide another update in 4 hours or as soon as more information becomes available.
Source
9 components affected9 degradedCARRIER NETWORK 8 · PROGRAMMABLE MESSAGING 1
All 9
  • Lookup Line Type Intelligence [Legacy API]degraded
  • MMS Toll-Free, North Americadegraded
  • MMS, APACdegraded
  • SMS Short Code, North Americadegraded
  • SMS, Latin Americadegraded
  • SMS, Middle East & Africadegraded
  • Voice, APACdegraded
  • Voice, Europedegraded
  • RCS Messagingdegraded

Overview

30d90d1y
Admitted uptimeCustomer time not hit, by the provider's own account. Regional and partial incidents count in part.
98.982%Grade D
IncidentsEverything posted on the status page except scheduled maintenance.
750 Sev 1
Fully downMost customers down, by the provider's own account.
0m
Median fixMedian time to resolve. Half of incidents were fixed faster.
9h 31m
LongestLongest Sev 1–2 incident, start to resolved.
41d 14h
Since lastTime since the last counted incident was resolved.
ongoing

By area

DProduction
66INCIDENTS
45d 15hAFFECTED
Your users are hit: apps, APIs, databases, inference
Worst, 90d
SEV 2Oct 23, 2026 · 6h 43m · regionalSMS Delivery Receipt Delays from Twilio to Multiple Networks in United States and Canada
SEV 2Oct 17, 2026 · 5h 03m · regional5300 Errors on Singapore Client Edge
SEV 2Oct 26, 2026 · ongoing · one locationSMS Delivery Failures and Delays Between a Subset of Twilio Phone Numbers and Multiple Networks in Brazil
Most hit
CARRIER NETWORK - SMS, Latin America14
CARRIER NETWORK - SMS, Middle East & Africa8
CARRIER NETWORK - SMS, Europe7
CARRIER NETWORK - Voice, Europe6
66 in the last 6 months.
BShipping
9INCIDENTS
39h 54mAFFECTED
You can't deploy, build or manage: CI, CLI, dashboard, auth, billing
Worst, 90d
SEV 3Oct 20, 2026 · 9h 50m · some customersWhatsApp Embedded Signup Configuration Failures
SEV 3Oct 22, 2026 · 5h 14m · some customersHosted Number Verification Calls not Reaching Customers
SEV 3Oct 21, 2026 · 1h 53mCustomer's Unable to Create New Requests for Hosting and Porting
Most hit
PHONE NUMBERS3
PROGRAMMABLE MESSAGING - WhatsApp Messaging2
SendGrid Partners1
CARRIER NETWORK - Verify Silent Network Auth1
9 in the last 6 months.
CleanSev 3–4Sev 1–2No data

Trend, last 12 months

75 in the last 6 months.

Severity mix

Sev 1 · Lights outProd site, API or database down, or data loss0
Sev 2 · BleedingProd degraded or partly down66
Sev 3 · Can't shipCan't deploy, build or manage it8
Sev 4 · PapercutDocs, status page, slow dashboard1

When it breaks

Start times, last 12 months, UTC.

What breaks

CARRIER NETWORKSMS, Latin America14 incidents
CARRIER NETWORKSMS, Middle East & Africa8 incidents
CARRIER NETWORKSMS, Europe7 incidents
CARRIER NETWORKVoice, Europe6 incidents
CARRIER NETWORKSMS Short Code, North America5 incidents
CARRIER NETWORKMMS Long Code, North America5 incidents

Where it breaks

Last 12 monthsPlaces named on the status page: cloud regions, cities, countries, data centres. An incident naming only a broad area (Europe, APAC) is counted under the map, not pinned.
5 down now · 32 places · 12 not pinned
Australia: 2 incidents · TwilioCanada: 2 incidents · TwilioColombia: 2 incidents · TwilioCosta Rica: 2 incidents · TwilioCzechia (Czech Republic): 2 incidents · TwilioIsrael: 2 incidents · TwilioNetherlands: 2 incidents · TwilioNigeria: 2 incidents · TwilioPuerto Rico: 2 incidents · TwilioSouth Africa: 2 incidents · TwilioUnited Kingdom: 2 incidents · TwilioChile: 1 incident · TwilioChina: 1 incident · TwilioDenmark: 1 incident · TwilioFrance: 1 incident · TwilioIndia: 1 incident · TwilioItaly: 1 incident · TwilioMali: 1 incident · TwilioMexico: 1 incident · TwilioNicaragua: 1 incident · TwilioPakistan: 1 incident · TwilioPortugal: 1 incident · TwilioSingapore: 1 incident · TwilioSweden: 1 incident · TwilioThailand: 1 incident · TwilioTurkey: 1 incident · TwilioUnited Arab Emirates: 1 incident · TwilioUnited States: down now, 12 incidents · TwilioBrazil: down now, 10 incidents · TwilioGermany: down now, 2 incidents · TwilioRomania: down now, 2 incidents · TwilioMauritania: down now, 1 incident · Twilio
Sev 1–2 time by place, 12 monthsTime with a Sev 1 or 2 open that names the place, any provider. Overlaps count once.
Australia7d 3h
China7d 0h
Brazil6d 17h
United States5d 1h
India4d 20h
Italy3d 20h

Communication

Updates eachStatus page updates per incident, on average.
8.0Last 12 months
Update gapMedian time between status page updates during an incident.
2h 00mLast 12 months
PostmortemsSev 1–2 incidents with a published write-up.
0 of 66Sev 1–2

Incident history

Oct 26–27, 2026ongoingSEV 2
Voice Call Failures from Twilio Phone Numbers to Romania3 incidents
  1. Mon, Oct 26 13:09 UTCongoingSEV 2
    Voice Call Failures from Twilio Phone Numbers to RomaniaTwilio voice calls from Twilio Phone Numbers to Digi Mobil subscribers in Romania failed from 13:09 UTC on 26 October. The cause was identified and a fix was in progress; the incident was still open with no resolution time given in the final update.AI-graded · one location · CARRIER NETWORK - Voice, Europe
    Why this grade
    1. RULES · SEV 2
      Sev 2 because CARRIER NETWORK - Voice, Europe had degraded performance
    2. CLAUDE · SEV 2 · REGIONAL · MEDIUM CONFIDENCE
      Voice calls from Twilio numbers to Digi Mobil subscribers in Romania failed; other destinations were not described as affected.
    3. Claude Haiku 5.5 · prompt v11 · Oct 27, 2026 · Raw record
    6 updates
    1. 13:09 UTC · investigating
      Twilio customers may be experiencing voice call failures from Twilio Phone Numbers to Digi Mobil network subscribers in Romania. Our team is actively investigating this issue. We will provide another update in 1 hour or as soon as more information becomes available.
    2. 13:31 UTC · identified
      Twilio customers may be experiencing voice call failures from Twilio Phone Numbers to Digi.Mobil network subscribers in Romania. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 1 hour or as soon as more information becomes available.
    3. 14:34 UTC · identified
      Twilio customers may be experiencing voice call failures from Twilio Phone Numbers to Digi.Mobil network subscribers in Romania. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 2 hours or as soon as more information becomes available.
    4. 16:40 UTC · identified
      Twilio customers may be experiencing voice call failures from Twilio Phone Numbers to network subscribers in Romania. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 4 hours or as soon as more information becomes available.
    5. 20:40 UTC · identified
      Twilio customers may be experiencing voice call failures from Twilio Phone Numbers to network subscribers in Romania. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 8 hours or as soon as more information becomes available.
    6. 04:43 UTC · identified
      Twilio customers may be experiencing voice call failures from Twilio Phone Numbers to Digi.Mobil network subscribers in Romania. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 16 hours or as soon as more information becomes available.
    Source
  2. Tue, Oct 27 08:37 UTCongoingSEV 2
    Voice Call Failures From a Subset of Twilio Phone Numbers to Multiple Networks in GermanyVoice calls from a subset of Twilio numbers failed to several German networks; still under investigation at posting.AI-graded · one location · CARRIER NETWORK - Voice, Europe
    Why this grade
    1. RULES · SEV 2
      Sev 2 because CARRIER NETWORK - Voice, Europe had degraded performance
    2. CLAUDE · SEV 2 · REGIONAL · MEDIUM CONFIDENCE
      Voice calls from a subset of Twilio numbers failed to several German networks; still under investigation at posting.
    3. Claude Haiku 5.5 · prompt v11 · Oct 27, 2026 · Raw record
    1 update
    1. 08:37 UTC · investigating
      Twilio customers may be experiencing voice call failures from a subset of Twilio Phone Numbers to network subscribers on multiple networks in Germany. Our team is actively investigating this issue. We will provide another update in 1 hour or as soon as more information becomes available.
    Source
  3. Tue, Oct 27 09:00 UTCongoingSEV 2
    Voice Call Failures From Twilio Phone Numbers to GermanyVoice calls from Twilio numbers to German mobile and fixed networks are failing; the update does not say how many calls are hit.AI-graded · one location · CARRIER NETWORK - Voice, Europe
    Why this grade
    1. RULES · SEV 2
      Sev 2 because CARRIER NETWORK - Voice, Europe had degraded performance
    2. CLAUDE · SEV 2 · REGIONAL · MEDIUM CONFIDENCE
      Voice calls from Twilio numbers to German mobile and fixed networks are failing; the update does not say how many calls are hit.
    3. Claude Haiku 5.5 · prompt v11 · Oct 27, 2026 · Raw record
    1 update
    1. 09:00 UTC · investigating
      Twilio customers may be experiencing voice call failures from Twilio Phone Numbers to network subscribers in Germany. Our team is actively investigating this issue. We will provide another update in 1 hour or as soon as more information becomes available.
    Source
Oct 27, 20263h 17mSEV 2
SMS Delivery Receipt Delays from a Subset of Twilio Long Codes to AT&T United StatesFrom 03:53 to 07:10 UTC on 27 October, SMS delivery receipts from a subset of Twilio long codes to AT&T US subscribers were delayed. Message delivery could still succeed. The cause was identified and receipts recovered by 05:09 UTC.AI-graded · one location · CARRIER NETWORK - SMS Long Code, North America
Why this grade
  1. RULES · SEV 2
    Sev 2 because CARRIER NETWORK - SMS Long Code, North America had degraded performance
  2. CLAUDE · SEV 2 · SUBSET · HIGH CONFIDENCE
    SMS delivery receipts were delayed for a subset of Twilio long codes sending to AT&T in the US; messages still delivered.
  3. Claude Haiku 5.5 · prompt v11 · Oct 27, 2026 · Raw record
5 updates
  1. 03:53 UTC · investigating
    Twilio customers may be experiencing SMS delivery receipt delays from a subset of Twilio Long Codes to AT&T network subscribers in the United States. Our team is actively investigating this issue. Message delivery may succeed, but delivery receipts may be delayed. We will provide another update in 1 hour or as soon as more information becomes available.
  2. 04:53 UTC · investigating
    Twilio customers may be experiencing SMS delivery receipt delays from a subset of Twilio Long Codes to AT&T network subscribers in the United States. Our team is actively investigating this issue. Message delivery may succeed, but delivery receipts may be delayed. We will provide another update in 2 hours or as soon as more information becomes available.
  3. 05:09 UTC · identified
    Twilio customers may be experiencing SMS delivery receipt delays from a subset of Twilio Long Codes to AT&T network subscribers in the United States. Our team has identified the cause, and is working to resolve the issue. Message delivery may succeed, but delivery receipts may be delayed. We will provide another update in 1 hour or as soon as more information becomes available.
  4. 05:09 UTC · monitoring
    We have observed a recovery in SMS delivery receipts from a subset of Twilio Long Codes to AT&T network subscribers in the United States and are monitoring service stability. We will provide another update in 2 hours or as soon as more information becomes available.
  5. 07:10 UTC · resolved
    The incident has been resolved and SMS delivery receipts from a subset of Twilio Long Codes to AT&T network subscribers in the United States are operating normally.
Source
Oct 27, 20263h 43mSEV 2
SMS Delivery Delays and Failures between a Subset of Twilio Long Codes and Multiple Networks in South AfricaSMS delivery between a subset of Twilio Long Codes and several South African mobile networks was delayed and some messages failed from about 01:34 to 05:17 UTC on 27 October. Twilio identified the cause and resolved it; SMS delivery returned to normal on affected networks.AI-graded · one location · CARRIER NETWORK - SMS, Middle East & Africa
Why this grade
  1. RULES · SEV 2
    Sev 2 because CARRIER NETWORK - SMS, Middle East & Africa had degraded performance
  2. CLAUDE · SEV 2 · REGIONAL · HIGH CONFIDENCE
    SMS delivery delays and failures for a subset of Long Codes to multiple South African networks for about 3.7 hours.
  3. Claude Haiku 5.5 · prompt v11 · Oct 27, 2026 · Raw record
5 updates
  1. 01:34 UTC · investigating
    Twilio customers may be experiencing SMS delivery delays between a subset of Twilio Long Codes and multiple networks in South Africa. Our team is actively investigating this issue. We will provide another update in 1 hour or as soon as more information becomes available.
  2. 01:40 UTC · identified
    Twilio customers may be experiencing SMS delivery delays and failures between a subset of Twilio Long Codes and network subscribers on multiple networks in South Africa. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 1 hour or as soon as more information becomes available.
  3. 02:40 UTC · identified
    Twilio customers may be experiencing SMS delivery delays and failures between a subset of Twilio Long Codes and network subscribers on multiple networks in South Africa. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 2 hours or as soon as more information becomes available.
  4. 03:15 UTC · monitoring
    We have observed a recovery in SMS delivery between a subset of Twilio Long Codes and network subscribers on multiple networks in South Africa and are monitoring service stability. We will provide another update in 2 hours or as soon as more information becomes available.
  5. 05:17 UTC · resolved
    The incident has been resolved and SMS delivery between a subset of Twilio Long Codes and network subscribers on affected networks in South Africa is operating normally.
Source
Oct 25–26, 2026ongoingSEV 2
SMS Delivery Delays and Failures from Twilio to Claro Brazil and Puerto Rico2 incidents
  1. Sun, Oct 25 12:47 UTC22h 22mSEV 2
    SMS Delivery Delays and Failures from Twilio to Claro Brazil and Puerto RicoTwilio SMS messages to Claro network subscribers in Brazil and Puerto Rico were delayed or failed from October 25 to October 26. Our team identified the cause and worked on a fix; the provider later reported SMS delivery operating normally.AI-graded · one location · CARRIER NETWORK - SMS, Latin America
    Why this grade
    1. RULES · SEV 2
      Sev 2 because CARRIER NETWORK - SMS, Latin America had degraded performance
    2. CLAUDE · SEV 2 · REGIONAL · HIGH CONFIDENCE
      SMS delivery to Claro subscribers in Brazil and Puerto Rico was delayed and failing for about 22 hours; other networks were fine.
    3. Claude Haiku 5.5 · prompt v11 · Oct 26, 2026 · Raw record
    10 updates
    1. 12:47 UTC · investigating
      Twilio customers may be experiencing SMS delivery delays and failures from Twilio to Claro network subscribers in Brazil. Our team is actively investigating this issue. We will provide another update in 1 hour or as soon as more information becomes available.
    2. 13:45 UTC · identified
      Twilio customers may be experiencing SMS delivery delays and failures from Twilio to Claro network subscribers in Brazil and Puerto Rico. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 1 hour or as soon as more information becomes available.
    3. 14:45 UTC · identified
      Twilio customers may be experiencing SMS delivery delays and failures from Twilio to Claro network subscribers in Brazil and Puerto Rico. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 2 hours or as soon as more information becomes available.
    4. 16:46 UTC · identified
      Twilio customers may be experiencing SMS delivery delays and failures from Twilio to Claro network subscribers in Brazil and Puerto Rico. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 4 hours or as soon as more information becomes available.
    5. 20:46 UTC · identified
      Twilio customers may be experiencing SMS delivery delays and failures from Twilio to Claro network subscribers in Brazil and Puerto Rico. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 8 hours or as soon as more information becomes available.
    6. 04:53 UTC · identified
      Twilio customers may be experiencing SMS delivery delays and failures from Twilio to Claro network subscribers in Brazil and Puerto Rico. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 16 hours or as soon as more information becomes available.
    7. 07:41 UTC · identified
      Twilio customers may be experiencing SMS delivery delays and failures from Twilio to Claro network subscribers in Brazil and Puerto Rico. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 1 hour or as soon as more information becomes available.
    8. 08:41 UTC · identified
      Twilio customers may be experiencing SMS delivery delays and failures from Twilio to Claro network subscribers in Brazil. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 2 hours or as soon as more information becomes available.
    9. 10:05 UTC · monitoring
      We have observed a recovery in SMS delivery from Twilio to Claro network subscribers in Brazil and Puerto Rico and are monitoring service stability. We will provide another update in 2 hours or as soon as more information becomes available.
    10. 11:09 UTC · resolved
      The incident has been resolved and SMS delivery from Twilio to Claro network subscribers in Brazil and Puerto Rico is operating normally.
    Source
  2. Mon, Oct 26 23:55 UTCongoingSEV 2
    SMS Delivery Failures and Delays Between a Subset of Twilio Phone Numbers and Multiple Networks in BrazilSome Twilio Brazil phone numbers experienced SMS delivery failures and delays to subscribers on multiple Brazilian networks. Twilio identified the cause and is working on a fix; no resolution has been posted yet.AI-graded · one location · CARRIER NETWORK - SMS, Latin America
    Why this grade
    1. RULES · SEV 2
      Sev 2 because CARRIER NETWORK - SMS, Latin America had degraded performance
    2. CLAUDE · SEV 2 · SUBSET · MEDIUM CONFIDENCE
      SMS delivery from a subset of Twilio Brazil numbers to multiple Brazilian networks failed or was delayed; ongoing, not yet resolved.
    3. Claude Haiku 5.5 · prompt v11 · Oct 27, 2026 · Raw record
    6 updates
    1. 23:55 UTC · investigating
      Twilio customers may be experiencing SMS delivery failures and delays between a subset of Twilio Phone Numbers and network subscribers on multiple networks in Brazil. Our team is actively investigating this issue. We will provide another update in 1 hour or as soon as more information becomes available.
    2. 00:03 UTC · identified
      Twilio customers may be experiencing SMS delivery failures and delays between a subset of Twilio Brazil Phone Numbers and network subscribers on multiple networks in Brazil. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 1 hour or as soon as more information becomes available.
    3. 00:05 UTC · identified
      Twilio customers may be experiencing SMS delivery failures and delays between a subset of Twilio Brazil Phone Numbers and multiple networks in Brazil. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 1 hour or as soon as more information becomes available.
    4. 01:05 UTC · identified
      Twilio customers may be experiencing SMS delivery failures between a subset of Twilio Phone Numbers and network subscribers on multiple networks in Brazil. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 2 hours or as soon as more information becomes available.
    5. 03:11 UTC · identified
      Twilio customers may be experiencing SMS delivery delays and failures between a subset of Twilio Phone Numbers and network subscribers on multiple networks in Brazil. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 4 hours or as soon as more information becomes available.
    6. 07:17 UTC · identified
      Twilio customers may be experiencing SMS delivery failures and delays between a subset of Twilio Phone Numbers and network subscribers on multiple networks in Brazil. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 8 hours or as soon as more information becomes available.
    Source
Oct 26, 2026ongoingSEV 2
SMS Delivery Delays From a Subset of Twilio Short Codes to Docomo Pacific United StatesCustomers sending SMS through a subset of Twilio Short Codes saw delivery delays and some failures to Docomo Pacific subscribers in the United States. Twilio identified the cause and is working on a fix; the incident is still open with no resolution time given.AI-graded · one model or feature · CARRIER NETWORK - SMS Short Code, North America
Why this grade
  1. RULES · SEV 2
    Sev 2 because CARRIER NETWORK - SMS Short Code, North America had degraded performance
  2. CLAUDE · SEV 2 · SINGLE · MEDIUM CONFIDENCE
    SMS from a subset of Twilio Short Codes to Docomo Pacific subscribers in the US is delayed and sometimes failing; other carriers are unaffected.
  3. Claude Haiku 5.5 · prompt v11 · Oct 27, 2026 · Raw record
5 updates
  1. 19:50 UTC · investigating
    Twilio customers may be experiencing SMS delivery delays and failures from a subset of Twilio Short Codes to Docomo Pacific network subscribers in the United States. Our team is actively investigating this issue. We will provide another update in 1 hour or as soon as more information becomes available.
  2. 19:57 UTC · identified
    Twilio customers may be experiencing SMS delivery delays and failures from a subset of Twilio Short Codes to Docomo Pacific network subscribers in the United States. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 1 hour or as soon as more information becomes available.
  3. 20:57 UTC · identified
    Twilio customers may be experiencing SMS delivery delays from a subset of Twilio Short Codes to Docomo Pacific network subscribers in the United States. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 2 hours or as soon as more information becomes available.
  4. 22:58 UTC · identified
    Twilio customers may be experiencing SMS delivery delays from a subset of Twilio Short Codes to Docomo Pacific network subscribers in the United States. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 4 hours or as soon as more information becomes available.
  5. 03:04 UTC · identified
    Twilio customers may be experiencing SMS delivery delays from a subset of Twilio Short Codes to Docomo Pacific network subscribers in the United States. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 8 hours or as soon as more information becomes available.
Source
Oct 24–26, 2026ongoingSEV 2
MMS Delivery Delays From a Subset of Twilio Long Codes to C-Spire United States2 incidents
  1. Sat, Oct 24 19:28 UTCongoingSEV 2
    MMS Delivery Delays From a Subset of Twilio Long Codes to C-Spire United StatesSome MMS messages sent via a subset of Twilio long codes, short codes and toll-free numbers were delivered late to C-Spire subscribers in the United States. The cause was identified, and a recovery was observed on 27 October; monitoring continued.AI-graded · one location · CARRIER NETWORK - MMS Long Code, North America +2
    Why this grade
    1. RULES · SEV 2
      Sev 2 because CARRIER NETWORK - MMS Long Code, North America had degraded performance
    2. CLAUDE · SEV 2 · REGIONAL · HIGH CONFIDENCE
      MMS messages from a subset of Twilio numbers to C-Spire subscribers in the US were delayed for about 60 hours; other carriers were not reported affected.
    3. Claude Haiku 5.5 · prompt v11 · Oct 27, 2026 · Raw record
    13 updates
    1. 19:28 UTC · investigating
      Twilio customers may be experiencing MMS delivery delays from Twilio to C-Spire network subscribers in the United States. Our team is actively investigating this issue. We will provide another update in 1 hour or as soon as more information becomes available.
    2. 20:29 UTC · investigating
      Twilio customers may be experiencing MMS delivery delays from Twilio to C-Spire network subscribers in the United States. Our team is actively investigating this issue. We will provide another update in 2 hours or as soon as more information becomes available.
    3. 22:30 UTC · investigating
      Twilio customers may be experiencing MMS delivery delays from Twilio to C-Spire network subscribers in the United States. Our team is actively investigating this issue. We will provide another update in 4 hours or as soon as more information becomes available.
    4. 02:36 UTC · investigating
      Twilio customers may be experiencing MMS delivery delays from Twilio to C-Spire network subscribers in the United States. Our team is actively investigating this issue. We will provide another update in 8 hours or as soon as more information becomes available.
    5. 10:38 UTC · investigating
      Twilio customers may be experiencing MMS delivery delays from Twilio to C-Spire network subscribers in the United States. Our team is actively investigating this issue. We will provide another update in 16 hours or as soon as more information becomes available.
    6. 02:44 UTC · investigating
      Twilio customers may be experiencing MMS delivery delays from Twilio to C-Spire network subscribers in the United States. Our team is actively investigating this issue. We will provide another update in 24 hours or as soon as more information becomes available.
    7. 07:02 UTC · identified
      Twilio customers may be experiencing MMS delivery delays from a subset of Twilio Longcodes to C-Spire network subscribers in the United States. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 1 hour or as soon as more information becomes available.
    8. 08:09 UTC · identified
      Twilio customers may be experiencing MMS delivery delays from a subset of Twilio Longcodes to C-Spire network subscribers in the United States. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 2 hours or as soon as more information becomes available.
    9. 10:12 UTC · identified
      Twilio customers may be experiencing MMS delivery delays from a subset of Twilio Longcodes to C-Spire network subscribers in the United States. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 4 hours or as soon as more information becomes available.
    10. 14:13 UTC · identified
      Twilio customers may be experiencing MMS delivery delays from a subset of Twilio Longcodes to C-Spire network subscribers in the United States. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 8 hours or as soon as more information becomes available.
    11. 22:20 UTC · identified
      Twilio customers may be experiencing MMS delivery delays from a subset of Twilio Phone Numbers to C-Spire network subscribers in the United States. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 16 hours or as soon as more information becomes available.
    12. 05:58 UTC · monitoring
      We have observed a recovery in MMS delivery from a subset of Twilio Long Codes to C-Spire network subscribers in the United States and are monitoring service stability. We will provide another update in 2 hours or as soon as more information becomes available.
    13. 08:04 UTC · monitoring
      We have observed a recovery in MMS delivery from a subset of Twilio Long Codes to C-Spire network subscribers in the United States and are monitoring service stability. We will provide another update in 4 hours or as soon as more information becomes available.
    Source
  2. Mon, Oct 26 20:29 UTCongoingSEV 2
    MMS Delivery Delays and Failures from a Subset of Twilio Long Codes to Cellcom United StatesSome Twilio long-code MMS messages to Cellcom United States subscribers were delayed or failed starting 2026-10-26 20:29 UTC. Cause identified as carrier-side; recovery observed at 06:58 UTC on 2026-10-27 and monitoring continues.AI-graded · one model or feature · CARRIER NETWORK - MMS Long Code, North America +1
    Why this grade
    1. RULES · SEV 2
      Sev 2 because CARRIER NETWORK - MMS Long Code, North America had degraded performance
    2. CLAUDE · SEV 2 · SINGLE · MEDIUM CONFIDENCE · BACK AFTER 10H 30M
      MMS delivery delayed and failing from a subset of Twilio long codes to Cellcom US subscribers; other carriers unaffected.
    3. Claude Haiku 5.5 · prompt v11 · Oct 27, 2026 · Raw record
    7 updates
    1. 20:29 UTC · investigating
      Twilio customers may be experiencing MMS delivery delays and failures from a subset of Twilio Long Codes to Cellcom network subscribers in the United States. Our team is actively investigating this issue. We will provide another update in 1 hour or as soon as more information becomes available.
    2. 20:34 UTC · identified
      Twilio customers may be experiencing MMS delivery delays and failures from a subset of Twilio Long Codes to Cellcom network subscribers in the United States. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 1 hour or as soon as more information becomes available.
    3. 21:34 UTC · identified
      Twilio customers may be experiencing MMS delivery delays and failures from a subset of Twilio Long Codes to Cellcom network subscribers in the United States. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 2 hours or as soon as more information becomes available.
    4. 23:35 UTC · identified
      Twilio customers may be experiencing MMS delivery delays and failures from a subset of Twilio Long Codes to Cellcom network subscribers in the United States. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 4 hours or as soon as more information becomes available.
    5. 03:35 UTC · identified
      Twilio customers may be experiencing MMS delivery delays and failures from a subset of Twilio Long Codes to Cellcom network subscribers in the United States. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 8 hours or as soon as more information becomes available.
    6. 06:58 UTC · monitoring
      We have observed a recovery in MMS delivery from a subset of Twilio Long Codes to Cellcom network subscribers in the United States and are monitoring service stability. We will provide another update in 2 hours or as soon as more information becomes available.
    7. 08:59 UTC · monitoring
      We have observed a recovery in MMS delivery from a subset of Twilio Long Codes to Cellcom network subscribers in the United States and are monitoring service stability. We will provide another update in 4 hours or as soon as more information becomes available.
    Source
Oct 26, 20262h 40mSEV 3
WhatsApp Sandbox Sending Configuration IssuesWhatsApp Sandbox sender configuration showed incorrect display names and preconfigured templates to users configuring WhatsApp senders. Engineers restored the display name and updated the templates, and the incident was resolved about 2.5 hours after it started.AI-graded · one model or feature · PROGRAMMABLE MESSAGING - WhatsApp Messaging
Why this grade
  1. RULES · SEV 2
    Sev 2 because PROGRAMMABLE MESSAGING - WhatsApp Messaging had degraded performance
  2. CLAUDE · SEV 3 · SINGLE · MEDIUM CONFIDENCE
    WhatsApp Sandbox sender configuration showed wrong display names and templates for about 2.5 hours; production messaging was not described as affected.
  3. Claude Haiku 5.5 · prompt v11 · Oct 26, 2026 · Raw record
3 updates
  1. 15:00 UTC · investigating
    We are investigating an issue with WhatsApp Sandbox configuration. Users may experience incorrect display names and preconfigured templates when configuring WhatsApp senders. We will provide another update in 1 hour or as soon as more information becomes available.
  2. 17:37 UTC · monitoring
    Our engineers have mitigated the issue and are monitoring system performance. The WhatsApp Sandbox display name has been restored and the preconfigured templates have been updated. We will provide another update in 2 hours or as soon as more information becomes available.
  3. 17:40 UTC · resolved
    We have monitored and resolved the issue with WhatsApp Sandbox sender configuration. All services are now operating normally at this time.
Source
Oct 26, 2026ongoingSEV 2
SMS Delivery Delays and Failures from Twilio to Mauritel MauritaniaTwilio SMS messages to Mauritel subscribers in Mauritania experienced delivery delays and failures, with delayed delivery receipts. The cause was identified, and the update history shows no resolution yet.AI-graded · one location · CARRIER NETWORK - SMS, Middle East & Africa
Why this grade
  1. RULES · SEV 2
    Sev 2 because CARRIER NETWORK - SMS, Middle East & Africa had degraded performance
  2. CLAUDE · SEV 2 · REGIONAL · MEDIUM CONFIDENCE
    SMS delivery to Mauritel subscribers in Mauritania was delayed and failing; delivery receipts were also late. Limited to one carrier in one country.
  3. Claude Haiku 5.5 · prompt v11 · Oct 27, 2026 · Raw record
6 updates
  1. 14:20 UTC · investigating
    Twilio customers may be experiencing SMS delivery receipt delays and SMS delivery failures from Twilio to Mauritel network subscribers in Mauritania. Our team is actively investigating this issue. Message delivery may succeed, but delivery receipts may be delayed. We will provide another update in 1 hour or as soon as more information becomes available.
  2. 14:39 UTC · identified
    Twilio customers may be experiencing SMS delivery delays and failures from Twilio to Mauritel network subscribers in Mauritania. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 1 hour or as soon as more information becomes available.
  3. 15:39 UTC · identified
    Twilio customers may be experiencing SMS delivery delays and failures from Twilio to Mauritel network subscribers in Mauritania. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 2 hours or as soon as more information becomes available.
  4. 17:40 UTC · identified
    Twilio customers may be experiencing SMS delivery delays and failures from Twilio to Mauritel network subscribers in Mauritania. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 4 hours or as soon as more information becomes available.
  5. 21:45 UTC · identified
    Twilio customers may be experiencing SMS delivery delays and failures from Twilio to Mauritel network subscribers in Mauritania. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 8 hours or as soon as more information becomes available.
  6. 05:51 UTC · identified
    Twilio customers may be experiencing SMS delivery delays and failures from Twilio to Mauritel network subscribers in Mauritania. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 16 hours or as soon as more information becomes available.
Source
Oct 26, 202613h 58mSEV 2
SMS Delivery Delays from Twilio to Cellcom IsraelSMS messages from Twilio to Cellcom network subscribers in Israel were delivered late from about 00:49 to 14:47 UTC on 26 October. Twilio identified the cause and monitored recovery before resolving the incident. No specific cause was published in the updates.AI-graded · one model or feature · CARRIER NETWORK - SMS, Middle East & Africa
Why this grade
  1. RULES · SEV 2
    Sev 2 because CARRIER NETWORK - SMS, Middle East & Africa had degraded performance
  2. CLAUDE · SEV 2 · SINGLE · HIGH CONFIDENCE
    SMS from Twilio to Cellcom Israel subscribers was delayed for about 14 hours; other networks were not reported affected.
  3. Claude Haiku 5.5 · prompt v11 · Oct 26, 2026 · Raw record
8 updates
  1. 00:49 UTC · investigating
    Twilio customers may be experiencing SMS delivery delays from Twilio to Cellcom network subscribers in Israel. Our team is actively investigating this issue. We will provide another update in 1 hour or as soon as more information becomes available.
  2. 00:51 UTC · identified
    Twilio customers may be experiencing SMS delivery delays from Twilio to Cellcom network subscribers in Israel. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 1 hour or as soon as more information becomes available.
  3. 01:52 UTC · identified
    Twilio customers may be experiencing SMS delivery delays from Twilio to Cellcom network subscribers in Israel. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 2 hours or as soon as more information becomes available.
  4. 03:57 UTC · identified
    Twilio customers may be experiencing SMS delivery delays from Twilio to Cellcom network subscribers in Israel. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 4 hours or as soon as more information becomes available.
  5. 06:04 UTC · monitoring
    We have observed a recovery in SMS delivery from Twilio to Cellcom network subscribers in Israel and are monitoring service stability. We will provide another update in 2 hours or as soon as more information becomes available.
  6. 08:04 UTC · monitoring
    We have observed a recovery in SMS delivery from Twilio to Cellcom network subscribers in Israel and are monitoring service stability. We will provide another update in 4 hours or as soon as more information becomes available.
  7. 12:10 UTC · monitoring
    We have observed a recovery in SMS delivery from Twilio to Cellcom network subscribers in Israel and are monitoring service stability. We will provide another update in 8 hours or as soon as more information becomes available.
  8. 14:47 UTC · resolved
    The incident has been resolved and SMS delivery from Twilio to Cellcom network subscribers in Israel is operating normally.
Source
Oct 25, 20264h 17mSEV 2
SMS Delivery Delays from Twilio to Telcel MexicoTwilio customers experienced SMS delivery delays to Telcel network subscribers in Mexico. Twilio reported a recovery after about two hours and marked the incident resolved about four hours after it started. No cause was given in the updates.AI-graded · one model or feature · CARRIER NETWORK - SMS, Latin America
Why this grade
  1. RULES · SEV 2
    Sev 2 because CARRIER NETWORK - SMS, Latin America had degraded performance
  2. CLAUDE · SEV 2 · SINGLE · HIGH CONFIDENCE
    SMS delivery to Telcel subscribers in Mexico was delayed for about four hours; other carriers were not reported affected.
  3. Claude Haiku 5.5 · prompt v11 · Oct 26, 2026 · Raw record
4 updates
  1. 23:15 UTC · investigating
    Twilio customers may be experiencing SMS delivery delays from Twilio to Telcel network subscribers in Mexico. Our team is actively investigating this issue. We will provide another update in 1 hour or as soon as more information becomes available.
  2. 00:16 UTC · investigating
    Twilio customers may be experiencing SMS delivery delays from Twilio to Telcel network subscribers in Mexico. Our team is actively investigating this issue. We will provide another update in 2 hours or as soon as more information becomes available.
  3. 01:25 UTC · monitoring
    We have observed a recovery in SMS delivery from Twilio to Telcel network subscribers in Mexico and are monitoring service stability. We will provide another update in 2 hours or as soon as more information becomes available.
  4. 03:32 UTC · resolved
    The incident has been resolved and SMS delivery from Twilio to Telcel network subscribers in Mexico is operating normally.
Source
Oct 25, 202612h 36mSEV 2
SMS Delivery Delays from Twilio to Telia SwedenTwilio customers saw SMS delivery delays to Telia network subscribers in Sweden starting 25 October 2026. Twilio investigated, observed recovery around 22:41 UTC, and resolved the incident the next day at 00:48 UTC. No cause was given.AI-graded · one location · CARRIER NETWORK - SMS, Europe
Why this grade
  1. RULES · SEV 2
    Sev 2 because CARRIER NETWORK - SMS, Europe had degraded performance
  2. CLAUDE · SEV 2 · REGIONAL · HIGH CONFIDENCE
    SMS delivery from Twilio to Telia subscribers in Sweden was delayed for about 12 hours; other networks were not reported affected.
  3. Claude Haiku 5.5 · prompt v11 · Oct 26, 2026 · Raw record
6 updates
  1. 12:12 UTC · investigating
    Twilio customers may be experiencing SMS delivery delays from Twilio to Telia network subscribers in Sweden. Our team is actively investigating this issue. We will provide another update in 1 hour or as soon as more information becomes available.
  2. 13:20 UTC · investigating
    Twilio customers may be experiencing SMS delivery delays from Twilio to Telia network subscribers in Sweden. Our team is actively investigating this issue. We will provide another update in 2 hours or as soon as more information becomes available.
  3. 15:26 UTC · investigating
    Twilio customers may be experiencing SMS delivery delays from Twilio to Telia network subscribers in Sweden. Our team is actively investigating this issue. We will provide another update in 4 hours or as soon as more information becomes available.
  4. 19:33 UTC · investigating
    Twilio customers may be experiencing SMS delivery delays from Twilio to Telia network subscribers in Sweden. Our team is actively investigating this issue. We will provide another update in 8 hours or as soon as more information becomes available.
  5. 22:41 UTC · monitoring
    We have observed a recovery in SMS delivery from Twilio to Telia network subscribers in Sweden and are monitoring service stability. We will provide another update in 2 hours or as soon as more information becomes available.
  6. 00:48 UTC · resolved
    The incident has been resolved and SMS delivery from Twilio to Telia network subscribers in Sweden is operating normally.
Source
Oct 25, 20269h 52mSEV 2
SMS Delivery Delays from Twilio to Airtel NigeriaTwilio SMS messages to Airtel Nigeria subscribers were delivered late from about 09:11 to 19:03 UTC on 25 October 2026. The provider identified a cause and worked on a fix, then reported delivery operating normally. No further detail on the cause was given.AI-graded · one location · CARRIER NETWORK - SMS, Middle East & Africa
Why this grade
  1. RULES · SEV 2
    Sev 2 because CARRIER NETWORK - SMS, Middle East & Africa had degraded performance
  2. CLAUDE · SEV 2 · REGIONAL · HIGH CONFIDENCE
    SMS delivery to Airtel subscribers in Nigeria was delayed for about ten hours; other carriers were not reported affected.
  3. Claude Haiku 5.5 · prompt v11 · Oct 25, 2026 · Raw record
7 updates
  1. 09:11 UTC · investigating
    Twilio customers may be experiencing SMS delivery delays from Twilio to Airtel network subscribers in Nigeria. Our team is actively investigating this issue. We will provide another update in 1 hour or as soon as more information becomes available.
  2. 09:32 UTC · identified
    Twilio customers may be experiencing SMS delivery delays from Twilio to Airtel network subscribers in Nigeria. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 1 hour or as soon as more information becomes available.
  3. 10:38 UTC · identified
    Twilio customers may be experiencing SMS delivery delays from Twilio to Airtel network subscribers in Nigeria. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 2 hours or as soon as more information becomes available.
  4. 12:43 UTC · identified
    Twilio customers may be experiencing SMS delivery delays from Twilio to Airtel network subscribers in Nigeria. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 4 hours or as soon as more information becomes available.
  5. 16:43 UTC · identified
    Twilio customers may be experiencing SMS delivery delays from Twilio to Airtel network subscribers in Nigeria. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 8 hours or as soon as more information becomes available.
  6. 18:20 UTC · monitoring
    We have observed a recovery in SMS delivery from Twilio to Airtel network subscribers in Nigeria and are monitoring service stability. We will provide another update in 2 hours or as soon as more information becomes available.
  7. 19:03 UTC · resolved
    The incident has been resolved and SMS delivery from Twilio to Airtel network subscribers in Nigeria is operating normally.
Source
Oct 24, 202650mSEV 3
Azure Marketplace SendGrid Customers Experiencing Account Management IssuesSendGrid users who subscribed through Azure Marketplace could not complete setup (502 errors), sign-in failed (403 errors), and plan changes such as upgrades, downgrades and cancellations failed. Impact began around 09:36 AM PDT. The cause was identified and mitigated, and the incident was resolved about 50 minutes after it started.AI-graded · some customers · SendGrid Partners
Why this grade
  1. RULES · SEV 2
    Sev 2 because SendGrid Partners had degraded performance
  2. CLAUDE · SEV 3 · SUBSET · HIGH CONFIDENCE
    Setup, sign-in and plan changes failed for SendGrid users buying through Azure Marketplace for about 50 minutes; other SendGrid users were not reported affected.
  3. Claude Haiku 5.5 · prompt v11 · Oct 24, 2026 · Raw record
3 updates
  1. 22:04 UTC · investigating
    Our engineering team is investigating issues impacting SendGrid users on Azure Marketplace: - unable to complete setup (fails with error 502) - single sign-in step fails (fails with error 403) - unable to complete plan changes such as: upgrades, downgrades, cancellations We will provide another update in 1 hour, or as soon as more information becomes available.
  2. 22:24 UTC · monitoring
    Our engineering team has identified the cause, determined customer impact began at 2026-10-24 09:36 AM PDT, and has mitigated the issue. We are monitoring to confirm that SendGrid users on Azure Marketplace are no longer experiencing account management issues, and will provide another update in 30 minutes.
  3. 22:54 UTC · resolved
    SendGrid users on Azure Marketplace are no longer experiencing account management issues. This incident has been resolved.
Source
Oct 24, 202620h 54mSEV 2
Silent Network Authentication (SNA) Missing Redirects and Gateway API (Lookup API) Failure Increase in NetherlandsSilent Network Authentication verification timed out and Lookup API transactions failed for Netherlands traffic from 21:28 UTC on 24 October until resolved 18:22 UTC on 25 October. API transactions could fall back to SMS OTP. Recovery was observed around 15:46 UTC on 25 October; the cause was not described in the updates.AI-graded · one location · CARRIER NETWORK - Verify Silent Network Auth +1
Why this grade
  1. RULES · SEV 2
    Sev 2 because CARRIER NETWORK - Verify Silent Network Auth had degraded performance
  2. CLAUDE · SEV 2 · REGIONAL · HIGH CONFIDENCE
    SNA verification timeouts and Lookup API failures hit Netherlands traffic for about 21 hours; other regions were not reported affected.
  3. Claude Haiku 5.5 · prompt v11 · Oct 25, 2026 · Raw record
9 updates
  1. 21:28 UTC · investigating
    Twilio customers may be experiencing device verification timeouts during API transactions for Silent Network Authentication (SNA) and failure responses for Lookup API transactions in the Netherlands. Our team is actively investigating the issue. API transactions may temporarily fail over to secondary methods like SMS OTP. We will provide another update in 1 hour or as soon as more information becomes available.
  2. 21:39 UTC · identified
    Twilio customers may be experiencing device verification timeouts during API transactions for Silent Network Authentication (SNA) and failure responses for Lookup API transactions in Netherlands. API transactions may temporarily fail over to secondary methods like SMS OTP. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 1 hour or as soon as more information becomes available.
  3. 22:39 UTC · identified
    Twilio customers may be experiencing device verification timeouts during API transactions for Silent Network Authentication (SNA) and failure responses for Lookup API transactions in Netherlands. Our team is actively investigating the issue. API transactions may temporarily fail over to secondary methods like SMS OTP. We will provide another update in 2 hours or as soon as more information becomes available.
  4. 00:52 UTC · identified
    Twilio customers may be experiencing device verification timeouts during API transactions for Silent Network Authentication (SNA) and failure responses for Lookup API transactions in the Netherlands. API transactions may temporarily fail over to secondary methods like SMS OTP. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 4 hours or as soon as more information becomes available.
  5. 04:53 UTC · identified
    Twilio customers may be experiencing device verification timeouts during API transactions for Silent Network Authentication (SNA) and failure responses for Lookup API transactions in the Netherlands. Our team is actively investigating the issue. API transactions may temporarily fail over to secondary methods like SMS OTP. We will provide another update in 8 hours or as soon as more information becomes available.
  6. 13:05 UTC · identified
    Twilio customers may be experiencing device verification timeouts during API transactions for Silent Network Authentication (SNA) and failure responses for Lookup API transactions in the Netherlands. API transactions may temporarily fail over to secondary methods like SMS OTP. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 16 hours or as soon as more information becomes available.
  7. 15:46 UTC · monitoring
    We have observed the recovery in API transactions for Silent Network Authentication (SNA) in the Netherlands and the recovery for Lookup API transactions involving the Netherlands and are monitoring service stability. We will provide another update in 2 hours or as soon as more information becomes available.
  8. 17:47 UTC · monitoring
    We have observed the recovery in API transactions for Silent Network Authentication (SNA) and the recovery for Lookup API transactions in the Netherlands and are monitoring service stability. We will provide another update in 4 hours or as soon as more information becomes available.
  9. 18:22 UTC · resolved
    The incident has been resolved and API transactions for Silent Network Authentication (SNA) in the Netherlands and Lookup API transactions in the Netherlands are operating normally.
Source
Oct 24, 202618h 40mSEV 2
Silent Network Authentication (SNA) Missing Redirects on Vodafone in United KingdomSilent Network Authentication API transactions timed out for customers on Vodafone in the United Kingdom from 2026-10-24 18:42 UTC. Some verifications may have failed over to SMS OTP. Twilio observed recovery on 2026-10-25 and resolved the incident about 13:22 UTC without stating a root cause.AI-graded · one location · CARRIER NETWORK - Verify Silent Network Auth
Why this grade
  1. RULES · SEV 2
    Sev 2 because CARRIER NETWORK - Verify Silent Network Auth had degraded performance
  2. CLAUDE · SEV 2 · REGIONAL · HIGH CONFIDENCE
    SNA device verification timed out for API transactions on Vodafone UK for about 19 hours; other networks unaffected.
  3. Claude Haiku 5.5 · prompt v11 · Oct 25, 2026 · Raw record
8 updates
  1. 18:42 UTC · investigating
    Twilio customers may be experiencing device verification timeouts during API transactions for Silent Network Authentication (SNA) on Vodafone in the United Kingdom. Our team is actively investigating the issue. API transactions may temporarily fail over to secondary methods like SMS OTP. We will provide another update in 1 hour or as soon as more information becomes available.
  2. 19:43 UTC · investigating
    Twilio customers may be experiencing device verification timeouts during API transactions for Silent Network Authentication (SNA) on Vodafone in the United Kingdom. Our team is actively investigating the issue. API transactions may temporarily fail over to secondary methods like SMS OTP. We will provide another update in 2 hours or as soon as more information becomes available.
  3. 22:20 UTC · investigating
    Twilio customers may be experiencing device verification timeouts during API transactions for Silent Network Authentication (SNA) on Vodafone in the United Kingdom. Our team is actively investigating the issue. API transactions may temporarily fail over to secondary methods like SMS OTP. We will provide another update in 4 hours or as soon as more information becomes available.
  4. 02:20 UTC · investigating
    Twilio customers may be experiencing device verification timeouts during API transactions for Silent Network Authentication (SNA) on Vodafone in the United Kingdom. Our team is actively investigating the issue. API transactions may temporarily fail over to secondary methods like SMS OTP. We will provide another update in 8 hours or as soon as more information becomes available.
  5. 05:10 UTC · monitoring
    We have observed the recovery in API transactions for Silent Network Authentication (SNA) on Vodafone in the United Kingdom and are monitoring service stability. We will provide another update in 2 hours or as soon as more information becomes available.
  6. 07:15 UTC · monitoring
    We have observed the recovery in API transactions for Silent Network Authentication (SNA) on Vodafone in the United Kingdom and are monitoring service stability. We will provide another update in 4 hours or as soon as more information becomes available.
  7. 11:15 UTC · monitoring
    We have observed the recovery in API transactions for Silent Network Authentication (SNA) on Vodafone in the United Kingdom and are monitoring service stability. We will provide another update in 8 hours or as soon as more information becomes available.
  8. 13:22 UTC · resolved
    The incident has been resolved and API transactions for Silent Network Authentication (SNA) on Vodafone in the United Kingdom are operating normally.
Source
Oct 24, 202628h 56mSEV 2
Voice Call Failures and Post Dial Delay From a Subset of Twilio Phone Numbers to United StatesFrom October 24 to 25, some voice calls from a subset of Twilio Phone Numbers to United States network subscribers failed or had post dial delay. The cause was identified and monitoring showed recovery on October 25 before the incident was resolved.AI-graded · one location · CARRIER NETWORK - Voice, North America
Why this grade
  1. RULES · SEV 2
    Sev 2 because CARRIER NETWORK - Voice, North America had degraded performance
  2. CLAUDE · SEV 2 · SUBSET · HIGH CONFIDENCE
    Voice calls from a subset of Twilio numbers to US carriers failed or had post-dial delay for about 19 hours; other routes were fine.
  3. Claude Haiku 5.5 · prompt v11 · Oct 25, 2026 · Raw record
10 updates
  1. 14:17 UTC · investigating
    Twilio customers may be experiencing voice call failures from a subset of Twilio Phone Numbers to network subscribers in the United States. Our team is actively investigating this issue. We will provide another update in 1 hour or as soon as more information becomes available.
  2. 15:18 UTC · investigating
    Twilio customers may be experiencing voice call failures from a subset of Twilio Phone Numbers to network subscribers in the United States. Our team is actively investigating this issue. We will provide another update in 2 hours or as soon as more information becomes available.
  3. 15:21 UTC · identified
    Twilio customers may be experiencing voice call failures and post dial delay from a subset of Twilio Phone Numbers to network subscribers in the United States. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 1 hour or as soon as more information becomes available.
  4. 16:22 UTC · identified
    Twilio customers may be experiencing voice call failures and post dial delay from a subset of Twilio Phone Numbers to network subscribers in the United States. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 2 hours or as soon as more information becomes available.
  5. 18:27 UTC · identified
    Twilio customers may be experiencing voice call failures and post dial delay from a subset of Twilio Phone Numbers to network subscribers in the United States. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 4 hours or as soon as more information becomes available.
  6. 22:28 UTC · identified
    Twilio customers may be experiencing voice call failures and post dial delay from a subset of Twilio Phone Numbers to network subscribers in the United States. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 8 hours or as soon as more information becomes available.
  7. 05:07 UTC · monitoring
    We have observed a recovery in voice calls from a subset of Twilio Phone Numbers to network subscribers in the United States and are monitoring service stability. We will provide another update in 2 hours or as soon as more information becomes available.
  8. 07:08 UTC · monitoring
    We have observed a recovery in voice calls from a subset of Twilio Phone Numbers to network subscribers in the United States and are monitoring service stability. We will provide another update in 4 hours or as soon as more information becomes available.
  9. 11:09 UTC · monitoring
    We have observed a recovery in voice calls from a subset of Twilio Phone Numbers to network subscribers in the United States and are monitoring service stability. We will provide another update in 8 hours or as soon as more information becomes available.
  10. 19:13 UTC · resolved
    The incident has been resolved and voice calls from a subset of Twilio Phone Numbers to network subscribers in the United States are operating normally.
Source
Oct 24, 20265h 43mSEV 2
SMS Delivery Delays from Twilio to WOM ColombiaTwilio SMS and MMS messages to WOM network subscribers in Colombia were delivered late from about 07:05 to 12:48 UTC on 2026-10-24. Twilio identified the cause and reported recovery at 11:41 before resolving the incident at 12:48. No specific cause was described.AI-graded · one model or feature · CARRIER NETWORK - SMS, Latin America +1
Why this grade
  1. RULES · SEV 2
    Sev 2 because CARRIER NETWORK - SMS, Latin America had degraded performance
  2. CLAUDE · SEV 2 · SINGLE · MEDIUM CONFIDENCE · BACK AFTER 4H 35M
    SMS and MMS delivery to WOM subscribers in Colombia was delayed for about five hours; other networks were not reported affected.
  3. Claude Haiku 5.5 · prompt v11 · Oct 24, 2026 · Raw record
6 updates
  1. 07:05 UTC · investigating
    Twilio customers may be experiencing SMS delivery delays from Twilio to WOM network subscribers in Colombia. Our team is actively investigating this issue. We will provide another update in 1 hour or as soon as more information becomes available.
  2. 08:06 UTC · investigating
    Twilio customers may be experiencing MMS delivery delays from Twilio to WOM network subscribers in Colombia. Our team is actively investigating this issue. We will provide another update in 2 hours or as soon as more information becomes available.
  3. 10:11 UTC · investigating
    Twilio customers may be experiencing MMS delivery delays from Twilio to WOM network subscribers in Colombia. Our team is actively investigating this issue. We will provide another update in 4 hours or as soon as more information becomes available.
  4. 11:40 UTC · identified
    Twilio customers may be experiencing SMS delivery delays from Twilio to WOM network subscribers in Colombia. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 1 hour or as soon as more information becomes available.
  5. 11:41 UTC · monitoring
    We have observed a recovery in SMS delivery from Twilio to WOM network subscribers in Colombia and are monitoring service stability. We will provide another update in 2 hours or as soon as more information becomes available.
  6. 12:48 UTC · resolved
    The incident has been resolved and SMS delivery from Twilio to WOM network subscribers in Colombia is operating normally.
Source
Oct 24, 20263d 1hSEV 2
SMS Delivery Delays from Twilio to Claro Costa RicaSMS sent from Twilio to Claro network subscribers in Costa Rica was delivered late intermittently from October 24 to October 27, 2026. Recovery was reported several times and then reversed. The incident was resolved on October 27 with delivery operating normally. The provider did not describe a cause beyond an identified issue.AI-graded · one location · CARRIER NETWORK - SMS, Latin America
Why this grade
  1. RULES · SEV 2
    Sev 2 because CARRIER NETWORK - SMS, Latin America had degraded performance
  2. CLAUDE · SEV 2 · REGIONAL · HIGH CONFIDENCE
    SMS delivery from Twilio to Claro Costa Rica subscribers was delayed for about three days; other networks were not described as affected.
  3. Claude Haiku 5.5 · prompt v11 · Oct 27, 2026 · Raw record
21 updates
  1. 00:48 UTC · investigating
    Twilio customers may be experiencing SMS delivery delays from Twilio to Claro network subscribers in Costa Rica. Our team is actively investigating this issue. We will provide another update in 1 hour or as soon as more information becomes available.
  2. 01:51 UTC · identified
    Twilio customers may be experiencing SMS delivery delays from Twilio to Claro network subscribers in Costa Rica. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 1 hour or as soon as more information becomes available.
  3. 02:51 UTC · identified
    Twilio customers may be experiencing SMS delivery delays from Twilio to Claro network subscribers in Costa Rica. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 2 hours or as soon as more information becomes available.
  4. 05:03 UTC · identified
    Twilio customers may be experiencing SMS delivery delays from Twilio to Claro network subscribers in Costa Rica. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 4 hours or as soon as more information becomes available.
  5. 09:03 UTC · identified
    Twilio customers may be experiencing SMS delivery delays from Twilio to Claro network subscribers in Costa Rica. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 8 hours or as soon as more information becomes available.
  6. 11:41 UTC · monitoring
    We have observed a recovery in SMS delivery from Twilio to Claro network subscribers in Costa Rica and are monitoring service stability. We will provide another update in 2 hours or as soon as more information becomes available.
  7. 13:53 UTC · monitoring
    We have observed a recovery in SMS delivery from Twilio to Claro network subscribers in Costa Rica and are monitoring service stability. We will provide another update in 4 hours or as soon as more information becomes available.
  8. 17:53 UTC · monitoring
    We have observed a recovery in SMS delivery from Twilio to Claro network subscribers in Costa Rica and are monitoring service stability. We will provide another update in 8 hours or as soon as more information becomes available.
  9. 22:11 UTC · identified
    Twilio customers may be experiencing SMS delivery delays from Twilio to Claro network subscribers in Costa Rica. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 1 hour or as soon as more information becomes available.
  10. 23:17 UTC · identified
    Twilio customers may be experiencing SMS delivery delays from Twilio to Claro network subscribers in Costa Rica. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 2 hours or as soon as more information becomes available.
  11. 01:26 UTC · identified
    Twilio customers may be experiencing SMS delivery delays from Twilio to Claro network subscribers in Costa Rica. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 4 hours or as soon as more information becomes available.
  12. 05:26 UTC · identified
    Twilio customers may be experiencing SMS delivery delays from Twilio to Claro network subscribers in Costa Rica. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 8 hours or as soon as more information becomes available.
  13. 13:35 UTC · identified
    Twilio customers may be experiencing SMS delivery delays from Twilio to Claro network subscribers in Costa Rica. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 16 hours or as soon as more information becomes available.
  14. 05:43 UTC · identified
    Twilio customers may be experiencing SMS delivery delays from Twilio to Claro network subscribers in Costa Rica. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 24 hours or as soon as more information becomes available.
  15. 18:15 UTC · monitoring
    We have observed a recovery in SMS delivery from Twilio to Claro network subscribers in Costa Rica and are monitoring service stability. We will provide another update in 2 hours or as soon as more information becomes available.
  16. 20:23 UTC · identified
    Twilio customers may be experiencing SMS delivery delays from Twilio to Claro network subscribers in Costa Rica. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 1 hour or as soon as more information becomes available.
  17. 21:32 UTC · identified
    Twilio customers may be experiencing SMS delivery delays from Twilio to Claro network subscribers in Costa Rica. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 1 hour or as soon as more information becomes available.
  18. 22:32 UTC · identified
    Twilio customers may be experiencing SMS delivery delays from Twilio to Claro network subscribers in Costa Rica. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 2 hours or as soon as more information becomes available.
  19. 23:24 UTC · monitoring
    We have observed a recovery in SMS delivery from Twilio to Claro network subscribers in Costa Rica and are monitoring service stability. We will provide another update in 2 hours or as soon as more information becomes available.
  20. 01:24 UTC · monitoring
    We have observed a recovery in SMS delivery from Twilio to Claro network subscribers in Costa Rica and are monitoring service stability. We will provide another update in 4 hours or as soon as more information becomes available.
  21. 01:54 UTC · resolved
    The incident has been resolved and SMS delivery from Twilio to Claro network subscribers in Costa Rica is operating normally.
Source
Oct 23, 20265h 17mSEV 2
Voice Call Failures from Network Subscribers to Twilio Costa Rica Landline NumbersCalls from Costa Rica network subscribers to a subset of Twilio Costa Rica landline numbers failed from about 22:26 to 03:43 UTC on October 23-24. Twilio reported a recovery at 01:41 and resolved the incident at 03:43. No cause was given in the updates.AI-graded · one location · CARRIER NETWORK - Voice, Latin America
Why this grade
  1. RULES · SEV 2
    Sev 2 because CARRIER NETWORK - Voice, Latin America had degraded performance
  2. CLAUDE · SEV 2 · SUBSET · HIGH CONFIDENCE · BACK AFTER 3H 14M
    Voice calls from Costa Rica network subscribers failed to a subset of Costa Rica landline numbers for about five hours.
  3. Claude Haiku 5.5 · prompt v11 · Oct 24, 2026 · Raw record
4 updates
  1. 22:26 UTC · investigating
    Twilio customers may be experiencing voice call failures from network subscribers to a subset of Twilio Costa Rica Phone Numbers. Our team is actively investigating this issue. We will provide another update in 1 hour or as soon as more information becomes available.
  2. 23:29 UTC · investigating
    Twilio customers may be experiencing voice call failures from network subscribers to a subset of Twilio Costa Rica Phone Numbers. Our team is actively investigating this issue. We will provide another update in 2 hours or as soon as more information becomes available.
  3. 01:41 UTC · monitoring
    We have observed a recovery in voice calls from network subscribers in Costa Rica to a subset of Twilio Costa Rica Landline Numbers and are monitoring service stability. We will provide another update in 2 hours or as soon as more information becomes available.
  4. 03:43 UTC · resolved
    The incident has been resolved and voice calls from network subscribers to Twilio Costa Rica Landline Numbers are operating normally.
Source
Oct 23, 20269h 56mSEV 2
SMS Delivery Delays from a Subset of Twilio Short Codes and Long Codes to Claro BrazilSMS sent through a subset of Twilio Alphanumeric Sender IDs, Short Codes and Long Codes to Claro subscribers in Brazil were delivered late. Recovery was observed around midnight UTC and the incident was resolved about 06:00 UTC on October 24. The provider did not describe a cause.AI-graded · one model or feature · CARRIER NETWORK - SMS, Latin America
Why this grade
  1. RULES · SEV 2
    Sev 2 because CARRIER NETWORK - SMS, Latin America had degraded performance
  2. CLAUDE · SEV 2 · SINGLE · HIGH CONFIDENCE · BACK AFTER 4H 18M
    SMS delivery to Claro subscribers in Brazil was delayed for a subset of Twilio senders for about 10 hours; other carriers were unaffected.
  3. Claude Haiku 5.5 · prompt v11 · Oct 24, 2026 · Raw record
7 updates
  1. 20:06 UTC · investigating
    Twilio customers may be experiencing SMS delivery delays from a subset of Twilio Alphanumeric Sender IDs, Short Codes, and Long Codes to Claro network subscribers in Brazil. Our team is actively investigating this issue. We will provide another update in 1 hour or as soon as more information becomes available.
  2. 20:07 UTC · identified
    Twilio customers may be experiencing SMS delivery delays from a subset of Twilio Short Codes and Long Codes to Claro network subscribers in Brazil. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 1 hour or as soon as more information becomes available.
  3. 21:07 UTC · identified
    Twilio customers may be experiencing SMS delivery delays from a subset of Twilio Alphanumeric Sender IDs, Short Codes, and Long Codes to Claro network subscribers in Brazil. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 2 hours or as soon as more information becomes available.
  4. 23:07 UTC · identified
    Twilio customers may be experiencing SMS delivery delays from a subset of Twilio Alphanumeric Sender IDs, Short Codes, and Long Codes to Claro network subscribers in Brazil. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 4 hours or as soon as more information becomes available.
  5. 00:24 UTC · monitoring
    We have observed a recovery in SMS delivery from a subset of Twilio Alphanumeric Sender IDs, Short Codes, and Long Codes to Claro network subscribers in Brazil and are monitoring service stability. We will provide another update in 2 hours or as soon as more information becomes available.
  6. 02:27 UTC · monitoring
    We have observed a recovery in SMS delivery from a subset of Twilio Alphanumeric Sender IDs, Short Codes, and Long Codes to Claro network subscribers in Brazil and are monitoring service stability. We will provide another update in 4 hours or as soon as more information becomes available.
  7. 06:02 UTC · resolved
    The incident has been resolved and SMS delivery from a subset of Twilio Short Codes and Long Codes to Claro network subscribers in Brazil is operating normally.
Source
Oct 23, 202610h 09mSEV 2
SMS Delivery Failures from Twilio to Multiple Networks in South AfricaTwilio customers' SMS messages to subscribers on multiple South African networks failed or were delayed from 19:46 UTC on 23 October until recovery around 23:20 UTC, with monitoring until resolution at 05:56 UTC on 24 October. The provider identified a cause but the text does not describe the fix.AI-graded · one location · CARRIER NETWORK - SMS, Middle East & Africa
Why this grade
  1. RULES · SEV 2
    Sev 2 because CARRIER NETWORK - SMS, Middle East & Africa had degraded performance
  2. CLAUDE · SEV 2 · REGIONAL · HIGH CONFIDENCE · BACK AFTER 3H 34M
    SMS delivery from Twilio to multiple South African networks failed for about four hours; other regions were not reported affected.
  3. Claude Haiku 5.5 · prompt v11 · Oct 24, 2026 · Raw record
8 updates
  1. 19:46 UTC · investigating
    Twilio customers may be experiencing SMS delivery failures from Twilio to South Africa. Our team is actively investigating this issue. We will provide another update in 1 hour or as soon as more information becomes available.
  2. 19:51 UTC · identified
    Twilio customers may be experiencing SMS delivery failures from Twilio to network subscribers on multiple networks in South Africa. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 1 hour or as soon as more information becomes available.
  3. 20:53 UTC · identified
    Twilio customers may be experiencing SMS delivery failures from Twilio to network subscribers on multiple networks in South Africa. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 2 hours or as soon as more information becomes available.
  4. 22:58 UTC · identified
    Twilio customers may be experiencing SMS delivery failures from Twilio to South Africa. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 4 hours or as soon as more information becomes available.
  5. 23:20 UTC · monitoring
    We have observed a recovery in SMS delivery from Twilio to network subscribers on multiple networks in South Africa and are monitoring service stability. We will provide another update in 2 hours or as soon as more information becomes available.
  6. 01:22 UTC · monitoring
    We have observed a recovery in SMS delivery from Twilio to South Africa and are monitoring service stability. We will provide another update in 4 hours or as soon as more information becomes available.
  7. 05:23 UTC · monitoring
    We have observed a recovery in SMS delivery from Twilio to multiple networks in South Africa and are monitoring service stability. We will provide another update in 8 hours or as soon as more information becomes available.
  8. 05:56 UTC · resolved
    The incident has been resolved and SMS delivery from Twilio to affected networks in South Africa is operating normally.
Source
Oct 23, 202619h 16mSEV 2
SMS Delivery Delays from a Subset of Twilio Phone Numbers to Telefonica NicaraguaSMS sent from a subset of Twilio phone numbers to Telefonica Nicaragua subscribers was delayed starting October 23 2026. Twilio identified the cause, saw recovery on October 24, and resolved the incident that day.AI-graded · one model or feature · CARRIER NETWORK - SMS, Latin America
Why this grade
  1. RULES · SEV 2
    Sev 2 because CARRIER NETWORK - SMS, Latin America had degraded performance
  2. CLAUDE · SEV 2 · SINGLE · HIGH CONFIDENCE · BACK AFTER 14H 21M
    SMS delivery from a subset of Twilio numbers to Telefonica Nicaragua subscribers was delayed for about 19 hours; other networks were not reported affected.
  3. Claude Haiku 5.5 · prompt v11 · Oct 24, 2026 · Raw record
8 updates
  1. 16:19 UTC · investigating
    Twilio customers may be experiencing SMS delivery delays from a subset of Twilio Phone Numbers to Telefonica network subscribers in Nicaragua. Our team is actively investigating this issue. We will provide another update in 1 hour or as soon as more information becomes available.
  2. 16:53 UTC · identified
    Twilio customers may be experiencing SMS delivery delays from a subset of Twilio Phone Numbers to Telefonica network subscribers in Nicaragua. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 1 hour or as soon as more information becomes available.
  3. 17:54 UTC · identified
    Twilio customers may be experiencing SMS delivery delays from a subset of Twilio Phone Numbers to Telefonica network subscribers in Nicaragua. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 2 hours or as soon as more information becomes available.
  4. 19:54 UTC · identified
    Twilio customers may be experiencing SMS delivery delays from a subset of Twilio Phone Numbers to Telefonica network subscribers in Nicaragua. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 4 hours or as soon as more information becomes available.
  5. 23:57 UTC · identified
    Twilio customers may be experiencing SMS delivery delays from a subset of Twilio Phone Numbers to Telefonica network subscribers in Nicaragua. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 8 hours or as soon as more information becomes available.
  6. 06:40 UTC · monitoring
    We have observed a recovery in SMS delivery from a subset of Twilio Phone Numbers to Telefonica network subscribers in Nicaragua and are monitoring service stability. We will provide another update in 2 hours or as soon as more information becomes available.
  7. 08:40 UTC · monitoring
    We have observed a recovery in SMS delivery from a subset of Twilio Phone Numbers to Telefonica network subscribers in Nicaragua and are monitoring service stability. We will provide another update in 4 hours or as soon as more information becomes available.
  8. 11:35 UTC · resolved
    The incident has been resolved and SMS delivery from a subset of Twilio Phone Numbers to Telefonica network subscribers in Nicaragua is operating normally.
Source
Oct 23, 20262d 11hSEV 2
Voice Call Post Dial Delay from Twilio Phone Numbers to ChileTwilio voice calls from Twilio Phone Numbers to network subscribers in Chile experienced post-dial delay starting 2026-10-23. Twilio observed recovery within about nine hours, kept monitoring, and declared the incident resolved on 2026-10-26. No cause was given.AI-graded · one location · CARRIER NETWORK - Voice, Latin America
Why this grade
  1. RULES · SEV 2
    Sev 2 because CARRIER NETWORK - Voice, Latin America had degraded performance
  2. CLAUDE · SEV 2 · REGIONAL · HIGH CONFIDENCE
    Voice calls from Twilio numbers to Chile had post-dial delays for about 30 hours; other destinations were not reported affected.
  3. Claude Haiku 5.5 · prompt v11 · Oct 26, 2026 · Raw record
10 updates
  1. 14:53 UTC · investigating
    Twilio customers may be experiencing voice call post dial delay from Twilio Phone Numbers to network subscribers in Chile. Our team is actively investigating this issue. We will provide another update in 1 hour or as soon as more information becomes available.
  2. 15:54 UTC · investigating
    Twilio customers may be experiencing voice call post dial delay from Twilio Phone Numbers to network subscribers in Chile. Our team is actively investigating this issue. We will provide another update in 2 hours or as soon as more information becomes available.
  3. 17:59 UTC · investigating
    Twilio customers may be experiencing voice call post dial delay from Twilio Phone Numbers to network subscribers in Chile. Our team is actively investigating this issue. We will provide another update in 4 hours or as soon as more information becomes available.
  4. 22:05 UTC · investigating
    Twilio customers may be experiencing voice call post dial delay from Twilio Phone Numbers to network subscribers in Chile. Our team is actively investigating this issue. We will provide another update in 8 hours or as soon as more information becomes available.
  5. 22:59 UTC · monitoring
    We have observed a recovery in voice calls from Twilio Phone Numbers to network subscribers in Chile and are monitoring service stability. We will provide another update in 2 hours or as soon as more information becomes available.
  6. 01:00 UTC · monitoring
    We have observed a recovery in voice calls from Twilio Phone Numbers to network subscribers in Chile and are monitoring service stability. We will provide another update in 4 hours or as soon as more information becomes available.
  7. 05:13 UTC · monitoring
    We have observed a recovery in voice calls from Twilio Phone Numbers to network subscribers on multiple networks in Chile and are monitoring service stability. We will provide another update in 8 hours or as soon as more information becomes available.
  8. 13:13 UTC · monitoring
    We have observed a recovery in voice calls from Twilio Phone Numbers to network subscribers in Chile and are monitoring service stability. We will provide another update in 16 hours or as soon as more information becomes available.
  9. 05:14 UTC · monitoring
    We have observed a recovery in voice calls from Twilio Phone Numbers to network subscribers in Chile and are monitoring service stability. We will provide another update in 24 hours or as soon as more information becomes available.
  10. 01:53 UTC · resolved
    The incident has been resolved and voice calls from Twilio Phone Numbers to network subscribers in Chile are operating normally.
Source
Oct 21–23, 20262d 2hSEV 2
SMS Delivery Delays from a Subset of Twilio Short Codes to Cellularone NE Arizona United States3 incidents
  1. Wed, Oct 21 17:10 UTC17h 46mSEV 2
    SMS Delivery Delays from a Subset of Twilio Short Codes to Cellularone NE Arizona United StatesSMS sent from a subset of Twilio Short Codes to Cellularone NE Arizona subscribers in the US was delivered late. Recovery was observed by 20:19 UTC on October 21, and the incident was resolved on October 22 at 10:57 UTC. No cause was given.AI-graded · one model or feature · CARRIER NETWORK - SMS Short Code, North America
    Why this grade
    1. RULES · SEV 2
      Sev 2 because CARRIER NETWORK - SMS Short Code, North America had degraded performance
    2. CLAUDE · SEV 2 · SINGLE · HIGH CONFIDENCE · BACK AFTER 3H 09M
      SMS delivery from a subset of short codes to one US carrier's subscribers in Northeast Arizona was delayed for about 12 hours; other networks were unaffected.
    3. Claude Haiku 5.5 · prompt v11 · Oct 24, 2026 · Raw record
    6 updates
    1. 17:10 UTC · investigating
      Twilio customers may be experiencing SMS delivery delays from a subset of Twilio Short Codes to Cellularone network subscribers in the United States. Our team is actively investigating this issue. We will provide another update in 1 hour or as soon as more information becomes available.
    2. 18:11 UTC · investigating
      Twilio customers may be experiencing SMS delivery delays from a subset of Twilio Short Codes to Cellularone network subscribers in the United States. Our team is actively investigating this issue. We will provide another update in 2 hours or as soon as more information becomes available.
    3. 20:19 UTC · monitoring
      We have observed a recovery in SMS delivery from a subset of Twilio Short Codes to Cellularone network subscribers in the United States and are monitoring service stability. We will provide another update in 2 hours or as soon as more information becomes available.
    4. 22:20 UTC · monitoring
      We have observed a recovery in SMS delivery from a subset of Twilio Short Codes to Cellularone network subscribers in the United States and are monitoring service stability. We will provide another update in 4 hours or as soon as more information becomes available.
    5. 02:25 UTC · monitoring
      We have observed a recovery in SMS delivery from a subset of Twilio Short Codes to Cellularone network subscribers in the United States and are monitoring service stability. We will provide another update in 8 hours or as soon as more information becomes available.
    6. 10:57 UTC · resolved
      The incident has been resolved and SMS delivery from a subset of Twilio Short Codes to Cellularone NE Arizona network subscribers in the United States is operating normally.
    Source
  2. Fri, Oct 23 12:29 UTC6h 43mSEV 2
    SMS Delivery Receipt Delays from Twilio to Multiple Networks in United States and CanadaFrom about 12:30 to 19:12 UTC on October 23, SMS delivery receipts from Twilio were delayed to subscribers on multiple US and Canadian networks, including Altice and Zipwhip toll-free traffic. Message delivery may have succeeded while receipts lagged. Twilio observed recovery at 16:35 and resolved the incident at 19:12.AI-graded · regional · CARRIER NETWORK - SMS Long Code, North America +3
    Why this grade
    1. RULES · SEV 2
      Sev 2 because CARRIER NETWORK - SMS Long Code, North America had degraded performance
    2. CLAUDE · SEV 2 · REGIONAL · HIGH CONFIDENCE · BACK AFTER 4H 06M
      SMS delivery receipts were delayed for multiple US and Canadian carrier networks for about six hours; messages still delivered.
    3. Claude Haiku 5.5 · prompt v11 · Oct 24, 2026 · Raw record
    8 updates
    1. 12:29 UTC · identified
      Twilio customers may be experiencing SMS delivery receipt delays from Twilio to Altice network subscribers in the United States. Our team has identified the cause, and is working to resolve the issue. Message delivery may succeed, but delivery receipts may be delayed. We will provide another update in 1 hour or as soon as more information becomes available.
    2. 12:42 UTC · identified
      Twilio customers may be experiencing SMS delivery receipt delays from Twilio to network subscribers on multiple networks in the United States. Our team has identified the cause, and is working to resolve the issue. Message delivery may succeed, but delivery receipts may be delayed. We will provide another update in 1 hour or as soon as more information becomes available.
    3. 12:50 UTC · identified
      Twilio customers may be experiencing SMS delivery receipt delays from Twilio to network subscribers on multiple networks in the United States and Canada. Our team has identified the cause, and is working to resolve the issue. Message delivery may succeed, but delivery receipts may be delayed. We will provide another update in 1 hour or as soon as more information becomes available.
    4. 13:51 UTC · identified
      Twilio customers may be experiencing SMS delivery receipt delays from Twilio to network subscribers on multiple networks in United States of America & Canada. Our team has identified the cause, and is working to resolve the issue. Message delivery may succeed, but delivery receipts may be delayed. We will provide another update in 2 hours or as soon as more information becomes available.
    5. 15:52 UTC · identified
      Twilio customers may be experiencing SMS delivery receipt delays from Twilio to network subscribers on multiple networks in multiple countries in North America. Our team has identified the cause, and is working to resolve the issue. Message delivery may succeed, but delivery receipts may be delayed. We will provide another update in 4 hours or as soon as more information becomes available.
    6. 16:35 UTC · monitoring
      We have observed a recovery in SMS delivery receipts from Twilio to network subscribers on multiple networks in multiple countries in North America and are monitoring service stability. We will provide another update in 2 hours or as soon as more information becomes available.
    7. 18:36 UTC · monitoring
      We have observed a recovery in SMS delivery receipts from Twilio to network subscribers on multiple networks in multiple countries in North America and are monitoring service stability. We will provide another update in 4 hours or as soon as more information becomes available.
    8. 19:12 UTC · resolved
      The incident has been resolved and SMS delivery receipts from Twilio to network subscribers on affected networks in the United States and Canada are operating normally.
    Source
  3. Fri, Oct 23 13:24 UTC1h 09mSEV 2
    SMS Delivery Delays from a Subset of Twilio Short Codes and Long Codes to Appalachian Wireless United StatesSome Twilio short code and long code SMS to Appalachian Wireless subscribers in the US were delivered late. The cause was identified and the incident was resolved after about 70 minutes. Twilio then marked it as a duplicate of a wider SMS delivery-receipt delay affecting multiple US and Canadian networks.AI-graded · one location · CARRIER NETWORK - SMS Long Code, North America +1
    Why this grade
    1. RULES · SEV 2
      Sev 2 because CARRIER NETWORK - SMS Long Code, North America had degraded performance
    2. CLAUDE · SEV 2 · REGIONAL · MEDIUM CONFIDENCE
      SMS from some short and long codes to Appalachian Wireless subscribers in the US was delayed for about an hour; other networks were not named as affected.
    3. Claude Haiku 5.5 · prompt v11 · Oct 24, 2026 · Raw record
    3 updates
    1. 13:24 UTC · investigating
      Twilio customers may be experiencing SMS delivery delays from a subset of Twilio Short Codes and Long Codes to Appalachian Wireless network subscribers in the United States. Our team is actively investigating this issue. We will provide another update in 1 hour or as soon as more information becomes available.
    2. 13:57 UTC · identified
      Twilio customers may be experiencing SMS delivery delays from a subset of Twilio Short Codes and Long Codes to Appalachian Wireless network subscribers in the United States. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 1 hour or as soon as more information becomes available.
    3. 14:33 UTC · resolved
      The incident was duplicate. Our Team is working for SMS Delivery Report Delays to Multiple Small networks in Unites states of America & Canada
    Source
Oct 23, 20266h 04mSEV 2
SMS Delivery Delays from a Subset of Twilio Short Codes to Liberty Mobile Puerto RicoSome Twilio short code SMS messages to Liberty Mobile subscribers in Puerto Rico were delivered late from about 13:13 to 19:17 UTC on 23 October. Recovery was observed around 15:31 UTC. The provider's updates did not describe the cause or a fix beyond identifying it.AI-graded · one model or feature · CARRIER NETWORK - SMS, Latin America
Why this grade
  1. RULES · SEV 2
    Sev 2 because CARRIER NETWORK - SMS, Latin America had degraded performance
  2. CLAUDE · SEV 2 · SINGLE · HIGH CONFIDENCE · BACK AFTER 2H 17M
    SMS delivery delayed from a subset of Twilio short codes to Liberty Mobile subscribers in Puerto Rico for about six hours.
  3. Claude Haiku 5.5 · prompt v11 · Oct 24, 2026 · Raw record
6 updates
  1. 13:13 UTC · investigating
    Twilio customers may be experiencing SMS delivery delays from a subset of Twilio Short Codes to Liberty Mobile network subscribers in Puerto Rico. Our team is actively investigating this issue. We will provide another update in 1 hour or as soon as more information becomes available.
  2. 13:30 UTC · identified
    Twilio customers may be experiencing SMS delivery delays from a subset of Twilio Short Codes to Liberty network subscribers in Puerto Rico. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 1 hour or as soon as more information becomes available.
  3. 14:30 UTC · identified
    Twilio customers may be experiencing SMS delivery delays from a subset of Twilio Short Codes to Liberty Mobile network subscribers in Puerto Rico. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 2 hours or as soon as more information becomes available.
  4. 15:31 UTC · monitoring
    We have observed a recovery in SMS delivery from a subset of Twilio Short Codes to Liberty Mobile network subscribers in Puerto Rico and are monitoring service stability. We will provide another update in 2 hours or as soon as more information becomes available.
  5. 17:31 UTC · monitoring
    We have observed a recovery in SMS delivery from a subset of Twilio Short Codes to Liberty Mobile network subscribers in Puerto Rico and are monitoring service stability. We will provide another update in 4 hours or as soon as more information becomes available.
  6. 19:17 UTC · resolved
    The incident has been resolved and SMS delivery from a subset of Twilio Short Codes to Liberty Mobile network subscribers in Puerto Rico is operating normally.
Source
Oct 23, 20269h 31mSEV 2
SMS Delivery Delays and Failures from Twilio to Telecall BrazilTwilio SMS to Telecall network subscribers in Brazil experienced delivery delays and failures from about 08:05 to 17:37 UTC on 23 October. Twilio identified the cause and reported recovery from 11:26 UTC, then resolved the incident after monitoring. No further cause or fix details were given.AI-graded · one model or feature · CARRIER NETWORK - SMS, Latin America
Why this grade
  1. RULES · SEV 2
    Sev 2 because CARRIER NETWORK - SMS, Latin America had degraded performance
  2. CLAUDE · SEV 2 · SINGLE · HIGH CONFIDENCE · BACK AFTER 3H 21M
    SMS from Twilio to Telecall subscribers in Brazil was delayed and failing for about nine hours; other networks were not reported affected.
  3. Claude Haiku 5.5 · prompt v11 · Oct 24, 2026 · Raw record
7 updates
  1. 08:05 UTC · investigating
    Twilio customers may be experiencing SMS delivery delays and failures from Twilio to Telecall network subscribers in Brazil. Our team is actively investigating this issue. We will provide another update in 1 hour or as soon as more information becomes available.
  2. 08:19 UTC · identified
    Twilio customers may be experiencing SMS delivery delays and failures from Twilio to Telecall network subscribers in Brazil. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 1 hour or as soon as more information becomes available.
  3. 09:24 UTC · identified
    Twilio customers may be experiencing SMS delivery delays and failures from Twilio to Telecall network subscribers in Brazil. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 2 hours or as soon as more information becomes available.
  4. 11:26 UTC · monitoring
    We have observed a recovery in SMS delivery from Twilio to Telecall network subscribers in Brazil and are monitoring service stability. We will provide another update in 2 hours or as soon as more information becomes available.
  5. 13:27 UTC · monitoring
    We have observed a recovery in SMS delivery from Twilio to Telecall network subscribers in Brazil and are monitoring service stability. We will provide another update in 4 hours or as soon as more information becomes available.
  6. 17:28 UTC · monitoring
    We have observed a recovery in SMS delivery from Twilio to Telecall network subscribers in Brazil and are monitoring service stability. We will provide another update in 8 hours or as soon as more information becomes available.
  7. 17:37 UTC · resolved
    The incident has been resolved and SMS delivery from Twilio to Telecall network subscribers in Brazil is operating normally.
Source
Oct 23, 20262h 45mSEV 2
SMS Delivery Delays from a Subset of Twilio Short Codes to Claro ColombiaSome SMS sent from a subset of Twilio Short Codes to Claro network subscribers in Colombia were delivered late. Twilio identified the cause, monitored a recovery, and resolved the incident after about 2 hours 45 minutes.AI-graded · one location · CARRIER NETWORK - SMS, Latin America
Why this grade
  1. RULES · SEV 2
    Sev 2 because CARRIER NETWORK - SMS, Latin America had degraded performance
  2. CLAUDE · SEV 2 · SUBSET · HIGH CONFIDENCE · BACK AFTER 44M
    SMS delivery from a subset of Twilio short codes to Claro subscribers in Colombia was delayed for about 2.75 hours; other networks unaffected.
  3. Claude Haiku 5.5 · prompt v11 · Oct 24, 2026 · Raw record
4 updates
  1. 04:12 UTC · investigating
    Twilio customers may be experiencing SMS delivery delays from a subset of Twilio Short Codes to Claro network subscribers in Colombia. Our team is actively investigating this issue. We will provide another update in 1 hour or as soon as more information becomes available.
  2. 04:36 UTC · identified
    Twilio customers may be experiencing SMS delivery delays from a subset of Twilio Short Codes to Claro network subscribers in Colombia. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 1 hour or as soon as more information becomes available.
  3. 04:56 UTC · monitoring
    We have observed a recovery in SMS delivery from a subset of Twilio Short Codes to Claro network subscribers in Colombia and are monitoring service stability. We will provide another update in 2 hours or as soon as more information becomes available.
  4. 06:57 UTC · resolved
    The incident has been resolved and SMS delivery from a subset of Twilio Short Codes to Claro network subscribers in Colombia is operating normally.
Source
Oct 23, 202615h 54mSEV 2
SMS Delivery Delays between a Subset of Twilio Phone Numbers and Multiple Networks in Brazil2 incidents
  1. Fri, Oct 23 03:37 UTC15h 19mSEV 2
    SMS Delivery Delays between a Subset of Twilio Phone Numbers and Multiple Networks in BrazilSMS delivery between a subset of Twilio Brazil phone numbers and subscribers on multiple Brazilian networks was delayed and sometimes failed from about 03:37 to 18:56 UTC on October 23. The provider identified a cause but the text does not describe it or the fix. Monitoring showed recovery from 14:07 UTC, and the incident was resolved at 18:56 UTC.AI-graded · one location · CARRIER NETWORK - SMS, Latin America
    Why this grade
    1. RULES · SEV 2
      Sev 2 because CARRIER NETWORK - SMS, Latin America had degraded performance
    2. CLAUDE · SEV 2 · REGIONAL · HIGH CONFIDENCE · BACK AFTER 10H 30M
      SMS delivery delays and some failures between a subset of Twilio Brazil numbers and several Brazilian networks for about 15 hours.
    3. Claude Haiku 5.5 · prompt v11 · Oct 24, 2026 · Raw record
    8 updates
    1. 03:37 UTC · investigating
      Twilio customers may be experiencing SMS delivery delays and failures between a subset of Twilio Brazil Phone Numbers and network subscribers on multiple networks in Brazil. Our team is actively investigating this issue. We will provide another update in 1 hour or as soon as more information becomes available.
    2. 03:51 UTC · identified
      Twilio customers may be experiencing SMS delivery delays between Twilio Phone Numbers and network subscribers on multiple networks in Brazil. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 1 hour or as soon as more information becomes available.
    3. 04:56 UTC · identified
      Twilio customers may be experiencing SMS delivery delays between a subset of Twilio Phone Numbers and network subscribers on multiple networks in Brazil. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 2 hours or as soon as more information becomes available.
    4. 06:57 UTC · identified
      Twilio customers may be experiencing SMS delivery delays and failures between a subset of Twilio Phone Numbers and network subscribers on multiple networks in Brazil. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 4 hours or as soon as more information becomes available.
    5. 10:58 UTC · identified
      Twilio customers may be experiencing SMS delivery delays and failures between a subset of Twilio Phone Numbers and network subscribers on multiple networks in Brazil. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 8 hours or as soon as more information becomes available.
    6. 14:07 UTC · monitoring
      We have observed a recovery in SMS delivery between a subset of Twilio Brazil Phone Numbers and network subscribers on multiple networks in Brazil and are monitoring service stability. We will provide another update in 2 hours or as soon as more information becomes available.
    7. 16:08 UTC · monitoring
      We have observed a recovery in SMS delivery between a subset of Twilio Phone Numbers and network subscribers on multiple networks in Brazil and are monitoring service stability. We will provide another update in 4 hours or as soon as more information becomes available.
    8. 18:56 UTC · resolved
      The incident has been resolved and SMS delivery between a subset of Twilio Phone Numbers and network subscribers on affected networks in Brazil is operating normally.
    Source
  2. Fri, Oct 23 03:51 UTC15h 41mSEV 2
    SMS Delivery Delays from Twilio to Surf Telecom BrazilSMS sent through Twilio to Surf Telecom subscribers in Brazil was delivered late from about 03:51 to 19:31 UTC on 23 October. Twilio identified the cause and reported recovery at 14:24 UTC, then resolved the incident after monitoring. The provider did not describe the root cause beyond the identified cause.AI-graded · one location · CARRIER NETWORK - SMS, Latin America
    Why this grade
    1. RULES · SEV 2
      Sev 2 because CARRIER NETWORK - SMS, Latin America had degraded performance
    2. CLAUDE · SEV 2 · REGIONAL · MEDIUM CONFIDENCE · BACK AFTER 10H 33M
      SMS from Twilio to Surf Telecom subscribers in Brazil was delayed for about 11 hours; other networks and countries were not reported affected.
    3. Claude Haiku 5.5 · prompt v11 · Oct 24, 2026 · Raw record
    8 updates
    1. 03:51 UTC · investigating
      Twilio customers may be experiencing SMS delivery delays from Twilio to Surf Telecom network subscribers in Brazil. Our team is actively investigating this issue. We will provide another update in 1 hour or as soon as more information becomes available.
    2. 04:56 UTC · investigating
      Twilio customers may be experiencing SMS delivery delays from Twilio to Surf Telecom network subscribers in Brazil. Our team is actively investigating this issue. We will provide another update in 2 hours or as soon as more information becomes available.
    3. 07:02 UTC · investigating
      Twilio customers may be experiencing SMS delivery delays from Twilio to Surf Telecom network subscribers in Brazil. Our team is actively investigating this issue. We will provide another update in 4 hours or as soon as more information becomes available.
    4. 11:03 UTC · investigating
      Twilio customers may be experiencing SMS delivery delays from Twilio to Surf Telecom network subscribers in Brazil. Our team is actively investigating this issue. We will provide another update in 8 hours or as soon as more information becomes available.
    5. 14:23 UTC · identified
      Twilio customers may be experiencing SMS delivery delays from Twilio to Surf Telecom network subscribers in Brazil. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 1 hour or as soon as more information becomes available.
    6. 14:24 UTC · monitoring
      We have observed a recovery in SMS delivery from Twilio to Surf Telecom network subscribers in Brazil and are monitoring service stability. We will provide another update in 2 hours or as soon as more information becomes available.
    7. 16:24 UTC · monitoring
      We have observed a recovery in SMS delivery from Twilio to Surf Telecom network subscribers in Brazil and are monitoring service stability. We will provide another update in 4 hours or as soon as more information becomes available.
    8. 19:31 UTC · resolved
      The incident has been resolved and SMS delivery from Twilio to Surf Telecom network subscribers in Brazil is operating normally.
    Source
Oct 23, 202621h 41mSEV 2
MMS Delivery Delays from a Subset of Twilio Long Codes to Viaero United StatesMMS messages from a subset of Twilio Long Codes to Viaero United States subscribers were delivered late from 00:23 to 22:04 UTC on 23 October. Recovery was observed around 07:37 UTC and the incident was resolved later that day. The provider did not describe the cause in the updates.AI-graded · one model or feature · CARRIER NETWORK - MMS Long Code, North America
Why this grade
  1. RULES · SEV 2
    Sev 2 because CARRIER NETWORK - MMS Long Code, North America had degraded performance
  2. CLAUDE · SEV 2 · SINGLE · HIGH CONFIDENCE · BACK AFTER 7H 15M
    MMS delivery from a subset of Twilio Long Codes to Viaero subscribers in the US was delayed for about 22 hours; other networks were unaffected.
  3. Claude Haiku 5.5 · prompt v11 · Oct 24, 2026 · Raw record
8 updates
  1. 00:23 UTC · investigating
    Twilio customers may be experiencing MMS delivery delays from a subset of Twilio Long Codes to Viaero network subscribers in the United States. Our team is actively investigating this issue. We will provide another update in 1 hour or as soon as more information becomes available.
  2. 00:25 UTC · identified
    Twilio customers may be experiencing MMS delivery delays from a subset of Twilio Long Codes to Viaero network subscribers in the United States. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 1 hour or as soon as more information becomes available.
  3. 01:31 UTC · identified
    Twilio customers may be experiencing MMS delivery delays from a subset of Twilio Long Codes to Viaero network subscribers in the United States. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 2 hours or as soon as more information becomes available.
  4. 03:36 UTC · identified
    Twilio customers may be experiencing MMS delivery delays from a subset of Twilio Long Codes to Viaero network subscribers in the United States. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 4 hours or as soon as more information becomes available.
  5. 07:37 UTC · monitoring
    We have observed a recovery in MMS delivery from a subset of Twilio Long Codes to Viaero network subscribers in the United States and are monitoring service stability. We will provide another update in 2 hours or as soon as more information becomes available.
  6. 09:39 UTC · monitoring
    We have observed a recovery in MMS delivery from a subset of Twilio Long Codes to Viaero network subscribers in the United States and are monitoring service stability. We will provide another update in 4 hours or as soon as more information becomes available.
  7. 13:39 UTC · monitoring
    We have observed a recovery in MMS delivery from a subset of Twilio Long Codes to Viaero network subscribers in the United States and are monitoring service stability. We will provide another update in 8 hours or as soon as more information becomes available.
  8. 22:04 UTC · resolved
    The incident has been resolved and MMS delivery from a subset of Twilio Long Codes to Viaero network subscribers in the United States is operating normally.
Source
Oct 22, 20262h 20mSEV 3
Issue with 500 Errors on Porting Request SubmissionsPorting request submissions in the Toll-free and Port a number tabs returned 500 errors, affecting wireless-only submissions for about two hours. Port-in API and US Local tab stayed functional. Customers with urgent requests were told to email [email protected]. Monitoring showed recovery at 19:03 and the incident was resolved at 19:30.AI-graded · some customers · PHONE NUMBERS
Why this grade
  1. RULES · SEV 2
    Sev 2 because PHONE NUMBERS had degraded performance
  2. CLAUDE · SEV 3 · SUBSET · HIGH CONFIDENCE
    Porting request submissions returned 500 errors for wireless-only submissions in the Toll-free and Port a number tabs for about two hours; Port-in API and Local tab worked.
  3. Claude Haiku 5.5 · prompt v11 · Oct 24, 2026 · Raw record
5 updates
  1. 17:10 UTC · investigating
    Our monitoring systems have detected a potential issue with porting request submissions returning 500 errors. Our engineers have been alerted and are investigating. We will provide an update when we have more details.
  2. 17:24 UTC · investigating
    We are observing an issue with 500 Errors on Porting Request Submissions. This issue is affecting the Port-in US Toll-free and Port a number tabs. The Port-in US Local tab is still currently functional and the Port-in API is still functional. We expect to provide another update in 1 hour or as soon as more information becomes available.
  3. 18:16 UTC · identified
    We have identified the issue with 500 Errors on Porting Request Submissions. This issue is affecting wireless only submissions on the Port-in US Toll-free and Port a number tabs. The Port-in US Local tab is still currently functional and the Port-in API is still functional. We are actively working to resolve this issue. If customers have an urgent porting request, they can submit it manually by sending an email to [email protected] at this time. We will provide another update in 2 hours or as soon as additional information is available.
  4. 19:03 UTC · monitoring
    We have started seeing recovery for the issue with 500 errors on porting request submissions. We will continue to monitor to ensure a full recovery. We expect to provide another update in 30 minutes or as soon as more information becomes available.
  5. 19:30 UTC · resolved
    We are no longer experiencing an issue with 500 errors on porting request submissions. This incident has been resolved.
Source
Oct 22, 20261h 36mSEV 2
Issue with Realtime Transcriptions and DeepgramRealtime transcription and Deepgram-backed speech recognition for Voice calls and Video in US1 were impaired from 16:32 to 18:08 UTC on 2026-10-22. Twilio mitigated the issue and recommended Google as a temporary workaround. The text gives no root cause.AI-graded · one model or feature · PROGRAMMABLE VOICE US1 - Speech Recognition (Gather Speech) US1 +2
Why this grade
  1. RULES · SEV 2
    Sev 2 because PROGRAMMABLE VOICE US1 - Speech Recognition (Gather Speech) US1 had degraded performance
  2. CLAUDE · SEV 2 · SINGLE · MEDIUM CONFIDENCE
    Realtime transcription and speech recognition for voice calls failed or degraded in US1 for about 90 minutes via a Deepgram-linked issue.
  3. Claude Haiku 5.5 · prompt v11 · Oct 24, 2026 · Raw record
3 updates
  1. 16:32 UTC · investigating
    Our monitoring systems have detected a potential issue with realtime transcription and Deepgram. Our engineers have been alerted and are investigating. We will provide an update when we have more details. Customers are recommended to move to Google as a temporary workaround until we have additional details.
  2. 17:38 UTC · monitoring
    We have mitigated the issue and are monitoring system performance. Speech recognition for Voice calls is returning to normal. We will provide another update in 30 minutes or as soon as more information becomes available.
  3. 18:08 UTC · resolved
    The issue affecting realtime transcriptions and Deepgram has been resolved, and the service is functioning normally at this time.
Source
Oct 22, 202626mSEV 4
Intelligent Alerts Delivery IssuesIntelligent Alert notifications about messaging metric anomalies were not delivered for about 26 minutes; core messaging was not described as affected.AI-graded · one model or feature · PROGRAMMABLE MESSAGING - Intelligent Alerts
Why this grade
  1. RULES · SEV 2
    Sev 2 because PROGRAMMABLE MESSAGING - Intelligent Alerts had degraded performance
  2. CLAUDE · SEV 4 · SINGLE · MEDIUM CONFIDENCE · BACK AFTER 26M
    Intelligent Alert notifications about messaging metric anomalies were not delivered for about 26 minutes; core messaging was not described as affected.
  3. Claude Haiku 5.5 · prompt v11 · Oct 24, 2026 · Raw record
2 updates
  1. 16:01 UTC · investigating
    We are currently experiencing an issue with Intelligent Alerts. Alert notifications for messaging metric anomalies may not be delivered while our team investigates. We will provide an update in 1 hour or as soon as more information becomes available.
  2. 16:27 UTC · resolved
    The issue affecting intelligent alert notifications for messaging metric anomalies has been resolved, and the service is functioning normally at this time
Source
Oct 22, 20265h 14mSEV 3
Hosted Number Verification Calls not Reaching CustomersSome customers did not receive OTP verification calls for Hosted Numbers, so they could not verify numbers or continue SMS hosting. Delays began around 14:56 UTC. Twilio identified the cause and advised customers to enable required geo permissions and retry. The incident was marked resolved at 20:10 UTC.AI-graded · some customers · PHONE NUMBERS
Why this grade
  1. RULES · SEV 2
    Sev 2 because PHONE NUMBERS had degraded performance
  2. CLAUDE · SEV 3 · SUBSET · MEDIUM CONFIDENCE
    Some customers did not receive one-time passcode verification calls for Hosted Numbers, blocking number verification and SMS hosting setup for about five hours.
  3. Claude Haiku 5.5 · prompt v11 · Oct 24, 2026 · Raw record
6 updates
  1. 14:56 UTC · investigating
    Our monitoring systems have detected a potential issue with OTP calls for Hosted SMS Verification. Our engineers have been alerted and are investigating. We will provide an update when we have more details.
  2. 15:01 UTC · investigating
    We are investigating an issue with Hosted Numbers. Users may experience delays in receiving OTP verification calls. We will provide another update in 1 hour or as soon as more information becomes available.
  3. 16:01 UTC · investigating
    We continue investigating an issue with Hosted Numbers. Users may experience delays in receiving OTP verification calls. We will provide another update in 2 hours or as soon as more information becomes available.
  4. 17:48 UTC · identified
    We have identified the cause of an issue affecting one-time passcode verification calls for Hosted Numbers. Some customers are not receiving these calls, which prevents them from verifying their numbers and continuing with SMS hosting. Customers may need to enable the required geo permissions on their account and retry the verification call. We are working to resolve this and will provide another update in 4 hours or as soon as more information becomes available.
  5. 19:41 UTC · monitoring
    We are seeing recovery for the issue affecting one-time passcode verification calls for Hosted Numbers. We will continue to monitor to ensure full service recovery. We expect to provide another update in 30 minutes or as soon as more information becomes available.
  6. 20:10 UTC · resolved
    We are no longer experiencing the issue affecting one-time passcode verification calls for Hosted Numbers. This incident has been resolved.
Source
Oct 22, 202625h 44mSEV 2
SMS Delivery Delays and Failures from Twilio to Malitel MaliTwilio SMS messages to Malitel subscribers in Mali were delayed and failed to deliver from October 22 to October 23, 2026. The provider identified a cause but did not describe it. Delivery was observed to recover on October 23 and the incident was resolved that afternoon.AI-graded · one location · CARRIER NETWORK - SMS, Middle East & Africa
Why this grade
  1. RULES · SEV 2
    Sev 2 because CARRIER NETWORK - SMS, Middle East & Africa had degraded performance
  2. CLAUDE · SEV 2 · REGIONAL · HIGH CONFIDENCE · BACK AFTER 22H 10M
    SMS delivery from Twilio to Malitel subscribers in Mali was delayed and failing for about 26 hours; other networks were not reported affected.
  3. Claude Haiku 5.5 · prompt v11 · Oct 24, 2026 · Raw record
10 updates
  1. 12:42 UTC · investigating
    Twilio customers may be experiencing SMS delivery delays and failures from Twilio to Malitel network subscribers in Mali. Our team is actively investigating this issue. We will provide another update in 1 hour or as soon as more information becomes available.
  2. 13:42 UTC · investigating
    Twilio customers may be experiencing SMS delivery delays and failures from Twilio to Malitel network subscribers in Mali. Our team is actively investigating this issue. We will provide another update in 2 hours or as soon as more information becomes available.
  3. 15:12 UTC · identified
    Twilio customers may be experiencing SMS delivery delays and failures from Twilio to Malitel network subscribers in Mali. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 1 hour or as soon as more information becomes available.
  4. 16:13 UTC · identified
    Twilio customers may be experiencing SMS delivery delays and failures from Twilio to Malitel network subscribers in Mali. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 2 hours or as soon as more information becomes available.
  5. 18:13 UTC · identified
    Twilio customers may be experiencing SMS delivery delays and failures from Twilio to Malitel network subscribers in Mali. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 4 hours or as soon as more information becomes available.
  6. 22:13 UTC · identified
    Twilio customers may be experiencing SMS delivery delays and delivery failures from Twilio to Malitel network subscribers in Mali. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 8 hours or as soon as more information becomes available.
  7. 06:14 UTC · identified
    Twilio customers may be experiencing SMS delivery delays and failures from Twilio to Malitel network subscribers in Mali. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 16 hours or as soon as more information becomes available.
  8. 10:52 UTC · monitoring
    We have observed a recovery in SMS delivery from Twilio to Malitel network subscribers in Mali and are monitoring service stability. We will provide another update in 2 hours or as soon as more information becomes available.
  9. 12:53 UTC · monitoring
    We have observed a recovery in SMS delivery from Twilio to Malitel network subscribers in Mali and are monitoring service stability. We will provide another update in 4 hours or as soon as more information becomes available.
  10. 14:26 UTC · resolved
    The incident has been resolved and SMS delivery from Twilio to Malitel network subscribers in Mali is operating normally.
Source
Oct 22, 202646mSEV 2
RCS Inbound Events DelayedInbound RCS events were delayed and some returned HTTP 500 and 503 errors starting 04:30 UTC on 22 October. Twilio identified the issue and resolved it by 05:16 UTC.AI-graded · one model or feature · PROGRAMMABLE MESSAGING - RCS Messaging
Why this grade
  1. RULES · SEV 2
    Sev 2 because PROGRAMMABLE MESSAGING - RCS Messaging had degraded performance
  2. CLAUDE · SEV 2 · SINGLE · HIGH CONFIDENCE
    Inbound RCS events to customers returned elevated HTTP 500 and 503 errors and were delayed for about 46 minutes; other Twilio messaging was not reported affected.
  3. Claude Haiku 5.5 · prompt v11 · Oct 24, 2026 · Raw record
3 updates
  1. 04:30 UTC · investigating
    We are investigating an issue with inbound RCS events. Users may experience elevated HTTP 500 and 503 status codes when receiving inbound RCS events. We will provide another update in 1 hour or as soon as more information becomes available.
  2. 04:34 UTC · identified
    We have identified the issue of delays with RCS inbound events. We are working toward a fix to restore normal service. We will provide another update in 1 hour or as soon as more information becomes available.
  3. 05:16 UTC · resolved
    RCS inbound events has been resolved and RCS Messaging, is operating normally at this time.
Source
Oct 22, 202656mSEV 3
Billing DelaysBilling processing delays or failures were reported on the Twilio platform for about an hour; the text does not say which customers were hit.AI-graded
Why this grade
  1. RULES · SEV 4
    Sev 4 from the incident title (no components listed)
  2. CLAUDE · SEV 3 · UNCLEAR · LOW CONFIDENCE
    Billing processing delays or failures were reported on the Twilio platform for about an hour; the text does not say which customers were hit.
  3. Claude Haiku 5.5 · prompt v11 · Oct 24, 2026 · Raw record
2 updates
  1. 01:29 UTC · investigating
    We are aware of issues affecting billing processing on the Twilio platform. Customers may experience delays or failures in these services. Our team is actively investigating. We will provide another update as soon as more information becomes available.
  2. 02:25 UTC · resolved
    Our team is analyzing the impact affecting billing processing on the Twilio platform. We apologize for the inconvenience and for any confusion this may have caused.
Source
Oct 22, 20265h 01mSEV 2
SMS Delivery Delays from Twilio to MTN NigeriaTwilio SMS messages sent to MTN network subscribers in Nigeria were delivered late from about 01:15 to 06:17 UTC on 22 October. Twilio identified the cause, saw delivery recover by 04:12 UTC, and resolved the incident at 06:17 UTC. No root cause detail was given in the updates.AI-graded · one location · CARRIER NETWORK - SMS, Middle East & Africa
Why this grade
  1. RULES · SEV 2
    Sev 2 because CARRIER NETWORK - SMS, Middle East & Africa had degraded performance
  2. CLAUDE · SEV 2 · REGIONAL · HIGH CONFIDENCE · BACK AFTER 2H 57M
    SMS delivery from Twilio to MTN Nigeria subscribers was delayed for about five hours; other networks were not reported affected.
  3. Claude Haiku 5.5 · prompt v11 · Oct 24, 2026 · Raw record
4 updates
  1. 01:15 UTC · investigating
    Twilio customers may be experiencing SMS delivery delays from Twilio to MTN network subscribers in Nigeria. Our team is actively investigating this issue. We will provide another update in 1 hour or as soon as more information becomes available.
  2. 02:18 UTC · identified
    Twilio customers may be experiencing SMS delivery delays from Twilio to MTN network subscribers in Nigeria. Our team has identified the cause. We will provide another update in 2 hours or as soon as more information becomes available.
  3. 04:12 UTC · monitoring
    We have observed a recovery in SMS delivery from Twilio to MTN network subscribers in Nigeria and are monitoring service stability. We will provide another update in 2 hours or as soon as more information becomes available.
  4. 06:17 UTC · resolved
    The incident has been resolved and SMS delivery from Twilio to MTN network subscribers in Nigeria is operating normally.
Source
Oct 21, 202619h 28mSEV 2
Silent Network Authentication (SNA) Missing Redirects and Gateway API (Lookup API) Failure Increase in NetherlandsSilent Network Authentication device verification timed out and Lookup API transactions failed for Netherlands traffic. Customers could fall back to SMS OTP. The provider identified the cause, saw recovery from about 22:15 UTC on October 21, and resolved the incident on October 22.AI-graded · one location · CARRIER NETWORK - Verify Silent Network Auth +2
Why this grade
  1. RULES · SEV 2
    Sev 2 because CARRIER NETWORK - Verify Silent Network Auth had degraded performance
  2. CLAUDE · SEV 2 · REGIONAL · HIGH CONFIDENCE · BACK AFTER 4H 50M
    SNA device verification timeouts and Lookup API failures hit Netherlands traffic for about 19 hours; other regions were not reported affected.
  3. Claude Haiku 5.5 · prompt v11 · Oct 24, 2026 · Raw record
9 updates
  1. 17:26 UTC · investigating
    Twilio customers may be experiencing device verification timeouts during API transactions for Silent Network Authentication (SNA) and failure responses for Lookup API transactions in the Netherlands. Our team is actively investigating the issue. API transactions may temporarily fail over to secondary methods like SMS OTP. We will provide another update in 1 hour or as soon as more information becomes available.
  2. 18:01 UTC · identified
    Twilio customers may be experiencing device verification timeouts during API transactions for Silent Network Authentication (SNA) and failure responses for Lookup API transactions in the Netherlands. API transactions may temporarily fail over to secondary methods like SMS OTP. Our team is actively investigating the issue. We will provide another update in 1 hour or as soon as more information becomes available.
  3. 19:02 UTC · identified
    Twilio customers may be experiencing device verification timeouts during API transactions for Silent Network Authentication (SNA) and failure responses for Lookup API transactions in the Netherlands. API transactions may temporarily fail over to secondary methods like SMS OTP. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 2 hours or as soon as more information becomes available.
  4. 21:02 UTC · identified
    Twilio customers may be experiencing device verification timeouts during API transactions for Silent Network Authentication (SNA) and failure responses for Lookup API transactions in the Netherlands. API transactions may temporarily fail over to secondary methods like SMS OTP. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 4 hours or as soon as more information becomes available.
  5. 22:15 UTC · monitoring
    We have observed the recovery in API transactions for Silent Network Authentication (SNA) in the Netherlands and the recovery for Lookup API transactions involving the Netherlands and are monitoring service stability. We will provide another update in 2 hours or as soon as more information becomes available.
  6. 00:16 UTC · monitoring
    We have observed the recovery in API transactions for Silent Network Authentication (SNA) in the Netherlands and the recovery for Lookup API transactions involving the Netherlands and are monitoring service stability. We will provide another update in 4 hours or as soon as more information becomes available.
  7. 04:17 UTC · monitoring
    We have observed the recovery in API transactions for Silent Network Authentication (SNA) in the Netherlands and are monitoring service stability. We will provide another update in 8 hours or as soon as more information becomes available.
  8. 12:30 UTC · monitoring
    We have observed the recovery in API transactions for Silent Network Authentication (SNA) in the Netherlands and are monitoring service stability. We have observed the recovery for Lookup API transactions in the Netherlands and are monitoring service stability. We will provide another update in 16 hours or as soon as more information becomes available.
  9. 12:53 UTC · resolved
    The incident has been resolved and API transactions for Silent Network Authentication (SNA) and Lookup API transactions in the Netherlands are operating normally.
Source
Oct 21, 20266h 01mSEV 2
SMS Delivery Failures from a Subset of Twilio Alphanumeric Sender Type to Jazz PakistanTwilio SMS sent via a subset of Alphanumeric Sender IDs failed to deliver to Jazz network subscribers in Pakistan from about 16:42 to 22:43 UTC on October 21. The provider identified the cause and monitored recovery before resolving the incident. No further cause details were given.AI-graded · one location · CARRIER NETWORK - SMS, APAC
Why this grade
  1. RULES · SEV 2
    Sev 2 because CARRIER NETWORK - SMS, APAC had degraded performance
  2. CLAUDE · SEV 2 · SUBSET · HIGH CONFIDENCE · BACK AFTER 4H 24M
    SMS from a subset of alphanumeric sender IDs to Jazz Pakistan subscribers failed for about six hours; other routes were not reported affected.
  3. Claude Haiku 5.5 · prompt v11 · Oct 24, 2026 · Raw record
6 updates
  1. 16:42 UTC · investigating
    Twilio customers may be experiencing SMS delivery failures from a subset of Twilio Alphanumeric Sender IDs to Jazz network subscribers in Pakistan. Our team is actively investigating this issue. We will provide another update in 1 hour or as soon as more information becomes available.
  2. 16:49 UTC · identified
    Twilio customers may be experiencing SMS delivery failures from a subset of Twilio Alphanumeric Sender IDs to Jazz network subscribers in Pakistan. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 1 hour or as soon as more information becomes available.
  3. 17:58 UTC · identified
    Twilio customers may be experiencing SMS delivery failures from a subset of Twilio Alphanumeric Sender IDs to Jazz network subscribers in Pakistan. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 2 hours or as soon as more information becomes available.
  4. 19:59 UTC · identified
    Twilio customers may be experiencing SMS delivery failures from a subset of Twilio Alphanumeric Sender IDs to Jazz network subscribers in Pakistan. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 4 hours or as soon as more information becomes available.
  5. 21:06 UTC · monitoring
    We have observed a recovery in SMS delivery from a subset of Twilio Alphanumeric Sender Type to Jazz network subscribers in Pakistan and are monitoring service stability. We will provide another update in 2 hours or as soon as more information becomes available.
  6. 22:43 UTC · resolved
    The incident has been resolved and SMS delivery from a subset of Twilio Alphanumeric Sender Type to Jazz network subscribers in Pakistan is operating normally.
Source
Oct 21, 20264d 20hSEV 2
SMS Delivery Delays and Failures from Twilio Short Codes to Multiple Networks in IndiaTwilio short-code SMS to subscribers on multiple Indian networks was delayed, and later also failed, from October 21 to October 26, 2026. Twilio reported recovery on October 26 and resolved the incident the same day. The provider did not describe a cause or fix in the updates.AI-graded · one location · CARRIER NETWORK - SMS, APAC
Why this grade
  1. RULES · SEV 2
    Sev 2 because CARRIER NETWORK - SMS, APAC had degraded performance
  2. CLAUDE · SEV 2 · REGIONAL · HIGH CONFIDENCE
    SMS from Twilio short codes to subscribers on multiple Indian networks was delayed and sometimes failed for about four days.
  3. Claude Haiku 5.5 · prompt v11 · Oct 26, 2026 · Raw record
16 updates
  1. 16:33 UTC · investigating
    Twilio customers may be experiencing SMS delivery delays from Twilio Short Codes to network subscribers on multiple networks in India. Our team is actively investigating this issue. We will provide another update in 1 hour or as soon as more information becomes available.
  2. 16:34 UTC · identified
    Twilio customers may be experiencing SMS delivery delays from Twilio Short Codes to network subscribers on multiple networks in India. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 1 hour or as soon as more information becomes available.
  3. 17:35 UTC · identified
    Twilio customers may be experiencing SMS delivery delays from Twilio Short Codes to network subscribers on multiple networks in India. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 2 hours or as soon as more information becomes available.
  4. 19:36 UTC · identified
    Twilio customers may be experiencing SMS delivery delays from Twilio Short Codes to network subscribers on multiple networks in India. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 4 hours or as soon as more information becomes available.
  5. 23:39 UTC · identified
    Twilio customers may be experiencing SMS delivery delays from Twilio Short Codes to network subscribers on multiple networks in India. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 8 hours or as soon as more information becomes available.
  6. 07:41 UTC · identified
    Twilio customers may be experiencing SMS delivery delays from Twilio Short Codes to network subscribers on multiple networks in India. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 16 hours or as soon as more information becomes available.
  7. 23:19 UTC · identified
    Twilio customers may be experiencing SMS delivery delays and failures from Twilio Short Codes to network subscribers on multiple networks in India. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 1 hour or as soon as more information becomes available.
  8. 00:25 UTC · identified
    Twilio customers may be experiencing SMS delivery delays and failures from Twilio Short Codes to network subscribers on multiple networks in India. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 2 hours or as soon as more information becomes available.
  9. 02:31 UTC · identified
    Twilio customers may be experiencing SMS delivery delays and failures from Twilio Short Codes to network subscribers on multiple networks in India. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 4 hours or as soon as more information becomes available.
  10. 06:33 UTC · identified
    Twilio customers may be experiencing SMS delivery delays and failures from Twilio Short Codes to network subscribers on multiple networks in India. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 8 hours or as soon as more information becomes available.
  11. 14:34 UTC · identified
    Twilio customers may be experiencing SMS delivery delays and failures from Twilio Short Codes to network subscribers on multiple networks in India. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 16 hours or as soon as more information becomes available.
  12. 06:37 UTC · identified
    Twilio customers may be experiencing SMS delivery delays and failures from Twilio Short Codes to network subscribers on multiple networks in India. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 24 hours or as soon as more information becomes available.
  13. 06:37 UTC · identified
    Twilio customers may be experiencing SMS delivery delays and failures from Twilio Short Codes to network subscribers on multiple networks in India. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 24 hours or as soon as more information becomes available.
  14. 06:41 UTC · monitoring
    We have observed a recovery in SMS delivery from Twilio Short Codes to network subscribers on multiple networks in India and are monitoring service stability. We will provide another update in 2 hours or as soon as more information becomes available.
  15. 08:41 UTC · monitoring
    We have observed a recovery in SMS delivery from Twilio Short Codes to network subscribers on multiple networks in India and are monitoring service stability. We will provide another update in 4 hours or as soon as more information becomes available.
  16. 12:44 UTC · resolved
    The incident has been resolved and SMS delivery from Twilio Short Codes to affected networks in India is operating normally.
Source
Oct 21, 202626h 55mSEV 2
SMS Delivery Failures from United Kingdom to a Subset of Twilio Long CodesSMS from UK carrier subscribers to a subset of Twilio UK Long Codes was delayed or failed from 21 Oct to 22 Oct 2026. Twilio identified the cause and monitored recovery before resolving the incident. No further cause or fix details were given.AI-graded · one location · CARRIER NETWORK - SMS, Europe
Why this grade
  1. RULES · SEV 2
    Sev 2 because CARRIER NETWORK - SMS, Europe had degraded performance
  2. CLAUDE · SEV 2 · SUBSET · HIGH CONFIDENCE · BACK AFTER 24H 54M
    SMS from UK network subscribers to a subset of Twilio UK long codes was delayed or failing for about 27 hours.
  3. Claude Haiku 5.5 · prompt v11 · Oct 24, 2026 · Raw record
9 updates
  1. 16:10 UTC · investigating
    Twilio customers may be experiencing SMS delivery delays from network subscribers to a subset of Twilio United Kingdom Long Codes. Our team is actively investigating this issue. We will provide another update in 1 hour or as soon as more information becomes available.
  2. 16:32 UTC · identified
    Twilio customers may be experiencing SMS delivery delays from network subscribers in the United Kingdom to a subset of Twilio Long Codes. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 1 hour or as soon as more information becomes available.
  3. 17:32 UTC · identified
    Twilio customers may be experiencing SMS delivery failures from network subscribers to Twilio United Kingdom Long Codes. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 1 hour or as soon as more information becomes available.
  4. 18:32 UTC · identified
    Twilio customers may be experiencing SMS delivery failures from network subscribers in the United Kingdom to a subset of Twilio Long Codes. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 2 hours or as soon as more information becomes available.
  5. 20:33 UTC · identified
    Twilio customers may be experiencing SMS delivery failures from network subscribers in the United Kingdom to a subset of Twilio Long Codes. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 4 hours or as soon as more information becomes available.
  6. 00:33 UTC · identified
    Twilio customers may be experiencing SMS delivery failures from network subscribers in the United Kingdom to a subset of Twilio Long Codes. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 8 hours or as soon as more information becomes available.
  7. 08:34 UTC · identified
    Twilio customers may be experiencing SMS delivery delays and failures from network subscribers to a subset of Twilio United Kingdom Long Codes. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 16 hours or as soon as more information becomes available.
  8. 17:04 UTC · monitoring
    We have observed a recovery in SMS delivery from the United Kingdom to a subset of Twilio Long Codes and are monitoring service stability. We will provide another update in 2 hours or as soon as more information becomes available.
  9. 19:05 UTC · resolved
    The incident has been resolved and SMS delivery from network subscribers in the United Kingdom to a subset of Twilio Long Codes is operating normally.
Source
Oct 21, 20261h 53mSEV 3
Customer's Unable to Create New Requests for Hosting and PortingTwilio could not create new phone number porting and hosting requests from about 15:07 to 17:00 UTC on 2026-10-21, and signing existing requests also failed. Engineers identified the issue, deployed a fix, and monitored recovery before resolving it.AI-graded · PHONE NUMBERS
Why this grade
  1. RULES · SEV 2
    Sev 2 because PHONE NUMBERS had degraded performance
  2. CLAUDE · SEV 3 · GLOBAL · MEDIUM CONFIDENCE · BACK AFTER 1H 23M
    Creating new porting and hosting requests failed for about two hours; existing numbers and live traffic were not described as affected.
  3. Claude Haiku 5.5 · prompt v11 · Oct 24, 2026 · Raw record
4 updates
  1. 15:07 UTC · investigating
    Our monitoring systems have detected a potential issue with Customer's unable to create new requests for hosting / porting. Potential failures when attempting to sign existing requests. Our engineers have been alerted and are investigating. We will provide an update when we have more details.
  2. 15:35 UTC · identified
    Our engineers have identified the issue where porting and hosting request creation is not operational and are working to deploy a fix. We expect to provide another update in 1 hour or as soon as more information becomes available.
  3. 16:30 UTC · monitoring
    We are observing recovery of the issue where porting and hosting request creation is not operational . We will continue monitoring the service to ensure a full recovery. We will provide another update in 30 minutes or as soon as more information becomes available.
  4. 17:00 UTC · resolved
    We are no longer experiencing an issue where porting and hosting request creation is not operational. This incident has been resolved.
Source
Oct 21, 202612h 16mSEV 2
SMS Delivery Delays from Twilio to Orange FranceTwilio customers saw SMS delivery delays to Orange network subscribers in France. The cause was identified, and the provider reported recovery at 20:41 UTC and resolution at 22:39 UTC on 21 October 2026.AI-graded · one location · CARRIER NETWORK - SMS, Europe
Why this grade
  1. RULES · SEV 2
    Sev 2 because CARRIER NETWORK - SMS, Europe had degraded performance
  2. CLAUDE · SEV 2 · REGIONAL · HIGH CONFIDENCE · BACK AFTER 10H 19M
    SMS from Twilio to Orange France subscribers was delayed for about 12 hours; other networks were not reported affected.
  3. Claude Haiku 5.5 · prompt v11 · Oct 24, 2026 · Raw record
7 updates
  1. 10:23 UTC · investigating
    Twilio customers may be experiencing SMS delivery delays from Twilio to Orange network subscribers in France. Our team is actively investigating this issue. We will provide another update in 1 hour or as soon as more information becomes available.
  2. 11:24 UTC · investigating
    Twilio customers may be experiencing SMS delivery delays from Twilio to Orange network subscribers in France. Our team is actively investigating this issue. We will provide another update in 2 hours or as soon as more information becomes available.
  3. 13:36 UTC · identified
    Twilio customers may be experiencing SMS delivery delays from Twilio to Orange network subscribers in France. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 1 hour or as soon as more information becomes available.
  4. 14:37 UTC · identified
    Twilio customers may be experiencing SMS delivery delays from Twilio to Orange network subscribers in France. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 2 hours or as soon as more information becomes available.
  5. 16:37 UTC · identified
    Twilio customers may be experiencing SMS delivery delays from Twilio to Orange network subscribers in France. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 4 hours or as soon as more information becomes available.
  6. 20:41 UTC · monitoring
    We have observed a recovery in SMS delivery from Twilio to Orange network subscribers in France and are monitoring service stability. We will provide another update in 2 hours or as soon as more information becomes available.
  7. 22:39 UTC · resolved
    The incident has been resolved and SMS delivery from Twilio to Orange network subscribers in France is operating normally.
Source
Oct 21, 20262d 2hSEV 2
Voice Call Post Dial Delay From a Subset of Twilio Phone Numbers to IsraelCalls from a subset of Twilio phone numbers to network subscribers in Israel experienced post-dial delay from 21 to 23 October 2026. Twilio identified the cause and later reported voice calls operating normally. The text gives no further cause or fix detail.AI-graded · one location · CARRIER NETWORK - Voice, Middle East & Africa
Why this grade
  1. RULES · SEV 2
    Sev 2 because CARRIER NETWORK - Voice, Middle East & Africa had degraded performance
  2. CLAUDE · SEV 2 · SUBSET · HIGH CONFIDENCE · BACK AFTER 2D 0H
    Voice calls from a subset of Twilio numbers to Israeli subscribers had post-dial delay for about three days; other destinations were not described as affected.
  3. Claude Haiku 5.5 · prompt v11 · Oct 24, 2026 · Raw record
8 updates
  1. 03:10 UTC · identified
    Twilio customers may be experiencing voice call post dial delay from a subset of Twilio Phone Numbers to network subscribers in Israel. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 1 hour or as soon as more information becomes available.
  2. 04:10 UTC · identified
    Twilio customers may be experiencing voice call post dial delay from a subset of Twilio Phone Numbers to network subscribers in Israel. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 2 hours or as soon as more information becomes available.
  3. 06:16 UTC · identified
    Twilio customers may be experiencing voice call post dial delay from a subset of Twilio Phone Numbers to network subscribers in Israel. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 4 hours or as soon as more information becomes available.
  4. 10:16 UTC · identified
    Twilio customers may be experiencing voice call post dial delay from a subset of Twilio Phone Numbers to network subscribers in Israel. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 8 hours or as soon as more information becomes available.
  5. 18:18 UTC · identified
    Twilio customers may be experiencing voice call post dial delay from a subset of Twilio Phone Numbers to network subscribers in Israel. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 16 hours or as soon as more information becomes available.
  6. 10:19 UTC · identified
    Twilio customers may be experiencing voice call post dial delay from a subset of Twilio Phone Numbers to network subscribers in Israel. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 24 hours or as soon as more information becomes available.
  7. 04:05 UTC · monitoring
    We have observed a recovery in voice calls from a subset of Twilio Phone Numbers to network subscribers in Israel and are monitoring service stability. We will provide another update in 2 hours or as soon as more information becomes available.
  8. 06:04 UTC · resolved
    The incident has been resolved and voice calls from a subset of Twilio Phone Numbers to network subscribers in Israel are operating normally.
Source
Oct 21, 20264h 16mSEV 2
SMS Delivery Delays from Twilio to T-Mobile Czech RepublicTwilio customers experienced delayed SMS delivery to T-Mobile Czech Republic subscribers. The issue was identified, a recovery was observed, and delivery returned to normal after about four hours. The provider did not describe the root cause in detail.AI-graded · one location · CARRIER NETWORK - SMS, Europe
Why this grade
  1. RULES · SEV 2
    Sev 2 because CARRIER NETWORK - SMS, Europe had degraded performance
  2. CLAUDE · SEV 2 · REGIONAL · HIGH CONFIDENCE · BACK AFTER 2H 09M
    SMS delivery from Twilio to T-Mobile Czech Republic subscribers was delayed for about four hours; other carriers were not reported affected.
  3. Claude Haiku 5.5 · prompt v11 · Oct 24, 2026 · Raw record
4 updates
  1. 01:10 UTC · investigating
    Twilio customers may be experiencing SMS delivery delays from Twilio to T-Mobile network subscribers in the Czech Republic. Our team is actively investigating this issue. We will provide another update in 1 hour or as soon as more information becomes available.
  2. 02:16 UTC · identified
    Twilio customers may be experiencing SMS delivery delays from Twilio to T-Mobile network subscribers in the Czech Republic. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 1 hour or as soon as more information becomes available.
  3. 03:19 UTC · monitoring
    We have observed a recovery in SMS delivery from Twilio to T-Mobile network subscribers in the Czech Republic and are monitoring service stability. We will provide another update in 2 hours or as soon as more information becomes available.
  4. 05:26 UTC · resolved
    The incident has been resolved and SMS delivery from Twilio to T-Mobile network subscribers in the Czech Republic is operating normally.
Source
Oct 20, 20263h 50mSEV 2
SMS Delivery Failures from a Subset of Twilio Alphanumeric Sender IDs to United Arab EmiratesTwilio SMS sent from a subset of Alphanumeric Sender IDs failed to reach Etisalat subscribers in the United Arab Emirates from about 20:45 to 00:35 UTC. Twilio identified the cause and monitored recovery before resolving; no fix details were given.AI-graded · one location · CARRIER NETWORK - SMS, Middle East & Africa
Why this grade
  1. RULES · SEV 2
    Sev 2 because CARRIER NETWORK - SMS, Middle East & Africa had degraded performance
  2. CLAUDE · SEV 2 · SUBSET · HIGH CONFIDENCE · BACK AFTER 1H 47M
    SMS delivery failed for a subset of alphanumeric sender IDs to UAE subscribers on one carrier for about four hours; other routes were unaffected.
  3. Claude Haiku 5.5 · prompt v11 · Oct 24, 2026 · Raw record
5 updates
  1. 20:45 UTC · investigating
    Twilio customers may be experiencing SMS delivery failures from a subset of Twilio Alphanumeric Sender IDs to Etisalat network subscribers in the United Arab Emirates. Our team is actively investigating this issue. We will provide another update in 1 hour or as soon as more information becomes available.
  2. 21:04 UTC · identified
    Twilio customers may be experiencing SMS delivery failures from a subset of Twilio Alphanumeric Sender Type to Etisalat network subscribers in the United Arab Emirates. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 1 hour or as soon as more information becomes available.
  3. 22:08 UTC · identified
    Twilio customers may be experiencing SMS delivery failures from a subset of Twilio Alphanumeric Sender Type to the United Arab Emirates. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 1 hour or as soon as more information becomes available.
  4. 22:32 UTC · monitoring
    We have observed a recovery in SMS delivery from a subset of Twilio Alphanumeric Sender IDs to the United Arab Emirates and are monitoring service stability. We will provide another update in 2 hours or as soon as more information becomes available.
  5. 00:35 UTC · resolved
    The incident has been resolved and SMS delivery from a subset of Twilio Alphanumeric Sender IDs to the United Arab Emirates is operating normally.
Source
Oct 20, 20262h 44mSEV 2
SMS Delivery Delays from a Subset of Twilio Short Codes to Telnyx United StatesSMS sent from a subset of Twilio Short Codes to Telnyx network subscribers in the United States was delivered late. The provider identified the cause and monitored recovery before resolving the incident about three hours after it started.AI-graded · one location · CARRIER NETWORK - SMS Short Code, North America
Why this grade
  1. RULES · SEV 2
    Sev 2 because CARRIER NETWORK - SMS Short Code, North America had degraded performance
  2. CLAUDE · SEV 2 · SUBSET · MEDIUM CONFIDENCE · BACK AFTER 43M
    SMS delivery from a subset of Twilio short codes to Telnyx US subscribers was delayed for about three hours.
  3. Claude Haiku 5.5 · prompt v11 · Oct 24, 2026 · Raw record
4 updates
  1. 17:16 UTC · investigating
    Twilio customers may be experiencing SMS delivery delays from a subset of Twilio Short Codes to Telnyx LLC network subscribers in the United States. Our team is actively investigating this issue. We will provide another update in 1 hour or as soon as more information becomes available.
  2. 17:20 UTC · identified
    Twilio customers may be experiencing SMS delivery delays from a subset of Twilio Short Codes to Telnyx network subscribers in the United States. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 1 hour or as soon as more information becomes available.
  3. 17:59 UTC · monitoring
    We have observed a recovery in SMS delivery from a subset of Twilio Short Codes to Telnyx network subscribers in the United States and are monitoring service stability. We will provide another update in 2 hours or as soon as more information becomes available.
  4. 20:00 UTC · resolved
    The incident has been resolved and SMS delivery from a subset of Twilio Short Codes to Telnyx network subscribers in the United States is operating normally.
Source
Oct 20, 20262h 05mSEV 3
Issue with Flex Agent Copilot Auto Wrap-up NotesTwilio's Flex Agent Copilot Auto Wrap-up Notes feature was degraded from about 16:53 to 18:58 UTC on 2026-10-20. Engineers investigated, saw recovery by 17:57, and resolved the issue at 18:58 with the service functioning normally. No cause was given.AI-graded · one model or feature · FLEX - Flex Agent Copilot
Why this grade
  1. RULES · SEV 2
    Sev 2 because FLEX - Flex Agent Copilot had degraded performance
  2. CLAUDE · SEV 3 · SINGLE · MEDIUM CONFIDENCE
    Flex Agent Copilot Auto Wrap-up Notes degraded for about two hours; this add-on feature of Flex was affected, while core Twilio APIs were not described as hit.
  3. Claude Haiku 5.5 · prompt v11 · Oct 24, 2026 · Raw record
5 updates
  1. 16:53 UTC · investigating
    Our monitoring systems have detected a potential issue with Flex Agent Copilot Auto Wrap-up Notes. Our engineers have been alerted and are investigating. We will provide an update when we have more details.
  2. 17:50 UTC · investigating
    We are currently experiencing an issue with Flex Agent Copilot Auto Wrap-up Notes. Our engineers have been alerted and are investigating. We will provide an update when we have more details.We expect to provide another update in 2 hours or as soon as more information becomes available.
  3. 17:57 UTC · monitoring
    We have started seeing recovery for the issue with Flex Agent Copilot Auto Wrap-up Notes. We will continue to monitor to ensure a full recovery. We expect to provide another update in 30 minutes or as soon as more information becomes available.
  4. 18:28 UTC · monitoring
    We have started seeing recovery for the issue with Flex Agent Copilot Auto Wrap-up Notes. We will continue to monitor to ensure a full recovery. We expect to provide another update in 30 minutes or as soon as more information becomes available.
  5. 18:58 UTC · resolved
    The issue affecting Flex Agent Copilot Auto Wrap-up Notes has been resolved, and the service is functioning normally at this time.
Source
Oct 20, 20263h 25mSEV 2
SMS Delivery Delays from a Subset of Twilio Phone Numbers to Telstra AustraliaSMS sent from a subset of Twilio phone numbers to Telstra subscribers in Australia was delivered late from about 16:28 to 19:53 UTC on 20 October 2026. The provider saw recovery at 17:30 and resolved the incident later; the cause was not described.AI-graded · one location · CARRIER NETWORK - SMS, APAC
Why this grade
  1. RULES · SEV 2
    Sev 2 because CARRIER NETWORK - SMS, APAC had degraded performance
  2. CLAUDE · SEV 2 · SUBSET · HIGH CONFIDENCE · BACK AFTER 1H 02M
    SMS delivery to Telstra subscribers in Australia was delayed from a subset of Twilio phone numbers; the rest of the network was fine.
  3. Claude Haiku 5.5 · prompt v11 · Oct 24, 2026 · Raw record
4 updates
  1. 16:28 UTC · investigating
    Twilio customers may be experiencing SMS delivery delays from a subset of Twilio Phone Numbers to Telstra network subscribers in Australia. Our team is actively investigating this issue. We will provide another update in 1 hour or as soon as more information becomes available.
  2. 16:29 UTC · identified
    Twilio customers may be experiencing SMS delivery delays from a subset of Twilio Phone Numbers to Telstra network subscribers in Australia. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 1 hour or as soon as more information becomes available.
  3. 17:30 UTC · monitoring
    We have observed a recovery in SMS delivery from a subset of Twilio Phone Numbers to Telstra network subscribers in Australia and are monitoring service stability. We will provide another update in 2 hours or as soon as more information becomes available.
  4. 19:53 UTC · resolved
    The incident has been resolved and SMS delivery from a subset of Twilio Phone Numbers to Telstra network subscribers in Australia is operating normally.
Source
Oct 20, 20269h 50mSEV 3
WhatsApp Embedded Signup Configuration FailuresFrom about 15:40 to 01:30 UTC on Oct 20-21, users could not select an existing WhatsApp Business Account during Embedded Signup when configuring WhatsApp senders. Creating new accounts still worked, and adding senders to existing accounts was blocked. Workarounds were searching by account name or a connected phone number. Engineers mitigated the issue and updated guidance and documentation.AI-graded · some customers · PROGRAMMABLE MESSAGING - WhatsApp Messaging
Why this grade
  1. RULES · SEV 2
    Sev 2 because PROGRAMMABLE MESSAGING - WhatsApp Messaging had degraded performance
  2. CLAUDE · SEV 3 · SUBSET · MEDIUM CONFIDENCE · BACK AFTER 9H 48M
    Customers could not select existing WhatsApp Business Accounts when configuring senders via Embedded Signup for about 10 hours; new accounts still worked.
  3. Claude Haiku 5.5 · prompt v11 · Oct 24, 2026 · Raw record
23 updates
  1. 15:43 UTC · investigating
    We are investigating an issue with WhatsApp Business API sender configuration. Users may be unable to select an existing WhatsApp Business Account during embedded signup when configuring WhatsApp senders. We will provide another update in 1 hour or as soon as more information becomes available.
  2. 16:29 UTC · investigating
    We are investigating an issue with WhatsApp embedded signup. Users may be unable to select an existing WhatsApp Business Account during embedded signup when configuring WhatsApp senders. As a workaround, customers may create a new WhatsApp Business Account and add senders there. We will provide another update in 15 minutes or as soon as more information becomes available.
  3. 16:47 UTC · investigating
    We are investigating an issue with WhatsApp embedded signup. Users may be unable to select an existing WhatsApp Business Account during embedded signup when configuring WhatsApp senders. As a workaround, customers may create a new WhatsApp Business Account during signup. We will provide another update in 15 minutes or as soon as more information becomes available.
  4. 17:10 UTC · investigating
    We are investigating an issue with WhatsApp embedded signup. Users may be unable to select an existing WhatsApp Business Account during embedded signup when configuring WhatsApp senders. Customers can still create a new WhatsApp Business Account during signup. We will provide another update in 15 minutes or as soon as more information becomes available.
  5. 17:26 UTC · investigating
    We are investigating an issue with WhatsApp embedded signup. Users may be unable to select an existing WhatsApp Business Account during embedded signup when configuring WhatsApp senders. Customers can still create a new WhatsApp Business Account during signup. We will provide another update in 15 minutes or as soon as more information becomes available.
  6. 17:43 UTC · investigating
    We are investigating an issue with WhatsApp embedded signup. Users may be unable to select an existing WhatsApp Business Account during embedded signup when configuring WhatsApp senders. Customers can still create a new WhatsApp Business Account during signup. We will provide another update in 15 minutes or as soon as more information becomes available.
  7. 18:09 UTC · investigating
    We are investigating an issue with WhatsApp embedded signup. Users may be unable to select an existing WhatsApp Business Account during embedded signup when configuring WhatsApp senders. Customers can still create a new WhatsApp Business Account during signup. We will provide another update in 15 minutes or as soon as more information becomes available.
  8. 18:29 UTC · investigating
    We are investigating an issue with WhatsApp embedded signup. Users may be unable to select an existing WhatsApp Business Account during embedded signup when configuring WhatsApp senders. Customers can still create a new WhatsApp Business Account during signup. We will provide another update in 15 minutes or as soon as more information becomes available.
  9. 18:56 UTC · investigating
    We are investigating an issue with WhatsApp embedded signup. Users may be unable to select an existing WhatsApp Business Account during embedded signup when configuring WhatsApp senders. Customers can still create a new WhatsApp Business Account during signup. We will provide another update in 15 minutes or as soon as more information becomes available.
  10. 19:28 UTC · investigating
    We are investigating an issue with WhatsApp embedded signup. Users may be unable to select an existing WhatsApp Business Account during embedded signup when configuring WhatsApp senders. Customers can still create a new WhatsApp Business Account during signup. We will provide another update in 15 minutes or as soon as more information becomes available.
  11. 19:45 UTC · investigating
    We are investigating an issue with WhatsApp embedded signup. Users may be unable to select an existing WhatsApp Business Account during embedded signup when configuring WhatsApp senders. Customers can still create a new WhatsApp Business Account during signup. We will provide another update in 15 minutes or as soon as more information becomes available.
  12. 20:00 UTC · investigating
    We are investigating an issue with WhatsApp embedded signup. Users may be unable to select an existing WhatsApp Business Account during embedded signup when configuring WhatsApp senders. Customers can still create a new WhatsApp Business Account during signup. We will provide another update in 1 hr or as soon as more information becomes available.
  13. 20:16 UTC · investigating
    We are investigating an issue with WhatsApp embedded signup. Users may be unable to select an existing WhatsApp Business Account during embedded signup when configuring WhatsApp senders. Customers can still create a new WhatsApp Business Account and add senders. We will provide another update in 15 minutes or as soon as more information becomes available.
  14. 20:32 UTC · investigating
    We are investigating an issue with WhatsApp embedded signup. Users may be unable to select an existing WhatsApp Business Account during embedded signup when configuring WhatsApp senders. Customers can still create a new WhatsApp Business Account and add senders. We will provide another update in 15 minutes or as soon as more information becomes available.
  15. 20:48 UTC · investigating
    We are investigating an issue with WhatsApp embedded signup. Users may be unable to select an existing WhatsApp Business Account during embedded signup when configuring WhatsApp senders. Customers can still create a new WhatsApp Business Account and add senders. We will provide another update in 15 minutes or as soon as more information becomes available.
  16. 21:17 UTC · investigating
    We are investigating an issue with WhatsApp embedded signup. Users may be unable to select an existing WhatsApp Business Account during embedded signup when configuring WhatsApp senders. Customers can still create a new WhatsApp Business Account and add senders. As a workaround, customers may enter the existing WhatsApp Business Account name instead of the account ID during signup. We will provide another update in 15 minutes or as soon as more information becomes available.
  17. 21:32 UTC · investigating
    We are investigating an issue with WhatsApp embedded signup. Users may be unable to select an existing WhatsApp Business Account during embedded signup when configuring WhatsApp senders. Customers can still create a new WhatsApp Business Account and add senders. As a workaround, customers may search for the existing WhatsApp Business Account by account name or by a connected phone number instead of selecting it by account ID. We will provide another update in 15 minutes or as soon as more information becomes available.
  18. 21:48 UTC · investigating
    We are investigating an issue with WhatsApp Embedded Signup. Users may be unable to select an existing WhatsApp Business Account during embedded signup when configuring WhatsApp senders. Customers can still create a new WhatsApp Business Account, but adding senders to an existing account may be affected. As a workaround, customers may search using the WhatsApp Business Account name or a connected phone number instead of the account ID. We will provide another update in 15 minutes or as soon as more information becomes available.
  19. 21:50 UTC · identified
    We have identified the issue of customers being unable to select an existing WhatsApp Business Account during WhatsApp Embedded Signup when configuring WhatsApp senders. Customers can still create a new WhatsApp Business Account, but adding senders to an existing account may continue to be affected. As a workaround, customers may search by their WhatsApp Business Account name or a phone number associated with the account. We will provide another update in 1 hour or as soon as more information becomes available.
  20. 22:50 UTC · identified
    We have identified the issue of users being unable to select an existing WhatsApp Business Account during WhatsApp Embedded Signup when configuring WhatsApp senders. Customers can still create a new WhatsApp Business Account, and as a workaround, customers may search by the WhatsApp Business Account name or a connected phone number instead of the account ID. We are updating customer guidance to reflect this experience. We will provide another update in 2 hours or as soon as more information becomes available.
  21. 00:54 UTC · identified
    We have identified the issue of users being unable to select an existing WhatsApp Business Account during embedded signup when configuring WhatsApp senders. As a workaround, customers may search using the WhatsApp Business Account name or a connected phone number instead. Customers can still create a new WhatsApp Business Account during signup. We will provide another update in 4 hours or as soon as more information becomes available.
  22. 01:31 UTC · monitoring
    Our engineers have mitigated the issue and are monitoring system performance. Updated guidance is now available in the self-sign-up flow and documentation to help customers select an existing WhatsApp Business Account by account name or a connected phone number when configuring WhatsApp senders. Customers can continue creating a new WhatsApp Business Account, and adding senders to an existing account should now proceed using the updated instructions. We will provide another update in 2 hours or as soon as more information becomes available.
  23. 01:34 UTC · resolved
    We have monitored and resolved the issue with WhatsApp embedded signup. All services are now operating normally at this time.
Source
Oct 20, 20266h 01mSEV 2
Voice Call Failures from Twilio Phone Numbers to Digi.Mobil RomaniaVoice calls from Twilio Phone Numbers to Digi.Mobil subscribers in Romania failed or were degraded from 10:46 to 16:46 UTC on 20 October. Twilio reported a recovery at 14:43 UTC, and the incident was resolved at 16:46 UTC. The cause was not described in detail.AI-graded · one location · CARRIER NETWORK - Voice, Europe
Why this grade
  1. RULES · SEV 2
    Sev 2 because CARRIER NETWORK - Voice, Europe had degraded performance
  2. CLAUDE · SEV 2 · REGIONAL · HIGH CONFIDENCE · BACK AFTER 3H 57M
    Voice calls from Twilio numbers to Digi.Mobil subscribers in Romania failed for about four hours; other networks were not reported affected.
  3. Claude Haiku 5.5 · prompt v11 · Oct 24, 2026 · Raw record
5 updates
  1. 10:46 UTC · investigating
    Twilio customers may be experiencing voice call failures from Twilio Phone Numbers to Digi.Mobil network subscribers in Romania. Our team is actively investigating this issue. We will provide another update in 1 hour or as soon as more information becomes available.
  2. 11:41 UTC · identified
    Twilio customers may be experiencing voice call failures from Twilio Phone Numbers to Digi.Mobil network subscribers in Romania. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 1 hour or as soon as more information becomes available.
  3. 12:50 UTC · identified
    Twilio customers may be experiencing voice call failures from Twilio Phone Numbers to network subscribers in Romania. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 2 hours or as soon as more information becomes available.
  4. 14:43 UTC · monitoring
    We have observed a recovery in voice calls from Twilio Phone Numbers to Digi.Mobil network subscribers in Romania and are monitoring service stability. We will provide another update in 2 hours or as soon as more information becomes available.
  5. 16:46 UTC · resolved
    The incident has been resolved and voice calls from Twilio Phone Numbers to Digi.Mobil network subscribers in Romania are operating normally.
Source
Oct 20, 20263h 17mSEV 2
Silent Network Authentication (SNA) Failure Increase on AT&T in United StatesSilent Network Authentication API transactions on AT&T in the United States failed or fell back to SMS OTP from about 05:28 to 08:45 UTC on 2026-10-20. Twilio said the cause was identified and recovery was observed by 06:44 UTC, then monitored until resolution.AI-graded · one location · CARRIER NETWORK - Verify Silent Network Auth
Why this grade
  1. RULES · SEV 2
    Sev 2 because CARRIER NETWORK - Verify Silent Network Auth had degraded performance
  2. CLAUDE · SEV 2 · REGIONAL · MEDIUM CONFIDENCE · BACK AFTER 1H 16M
    Silent Network Authentication verification failed on AT&T in the United States for about an hour; affected apps fell back to SMS OTP.
  3. Claude Haiku 5.5 · prompt v11 · Oct 24, 2026 · Raw record
5 updates
  1. 05:28 UTC · investigating
    Twilio customers may be experiencing verification failures during API transactions for Silent Network Authentication (SNA) on AT&T in the United States. Our team is actively investigating the issue. API transactions may temporarily fail over to secondary methods like SMS OTP. We will provide another update in 1 hour or as soon as more information becomes available.
  2. 05:39 UTC · identified
    Twilio customers may be experiencing verification failures during API transactions for Silent Network Authentication (SNA) on AT&T in the United States. API transactions may temporarily fail over to secondary methods like SMS OTP. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 1 hour or as soon as more information becomes available.
  3. 06:44 UTC · monitoring
    We have observed recovery in API transactions for Silent Network Authentication (SNA) on AT&T in the United States and are monitoring service stability. We will provide another update in 2 hours or as soon as more information becomes available.
  4. 08:45 UTC · monitoring
    We have observed recovery in API transactions for Silent Network Authentication (SNA) on AT&T in the United States and are monitoring service stability. We will provide another update in 4 hours or as soon as more information becomes available.
  5. 08:45 UTC · resolved
    The incident has been resolved and API transactions for Silent Network Authentication (SNA) on AT&T in the United States are operating normally.
Source
Oct 20, 202610h 09mSEV 2
Voice Call Failures from Network Subscribers to a Subset of Twilio Thailand Phone NumbersVoice calls from some Thai mobile network subscribers to a subset of Twilio Thailand phone numbers failed from about 02:05 to 12:14 UTC on 20 October. Twilio identified the cause and monitored recovery before resolving. No cause details were posted in the updates.AI-graded · one location · CARRIER NETWORK - Voice, APAC
Why this grade
  1. RULES · SEV 2
    Sev 2 because CARRIER NETWORK - Voice, APAC had degraded performance
  2. CLAUDE · SEV 2 · REGIONAL · HIGH CONFIDENCE · BACK AFTER 4H 07M
    Inbound voice calls from network subscribers to a subset of Thailand numbers failed for about 10 hours; other regions were unaffected.
  3. Claude Haiku 5.5 · prompt v11 · Oct 24, 2026 · Raw record
7 updates
  1. 02:05 UTC · investigating
    Twilio customers may be experiencing voice call failures from network subscribers to a subset of Twilio Thailand Phone Numbers. Our team is actively investigating this issue. We will provide another update in 1 hour or as soon as more information becomes available.
  2. 02:06 UTC · identified
    Twilio customers may be experiencing voice call failures from network subscribers to a subset of Twilio Thailand Phone Numbers. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 1 hour or as soon as more information becomes available.
  3. 03:12 UTC · identified
    Twilio customers may be experiencing voice call failures from network subscribers to a subset of Twilio Thailand Phone Numbers. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 2 hours or as soon as more information becomes available.
  4. 05:12 UTC · identified
    Twilio customers may be experiencing voice call failures from network subscribers to a subset of Twilio Thailand Phone Numbers. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 4 hours or as soon as more information becomes available.
  5. 06:12 UTC · monitoring
    We have observed a recovery in voice calls from network subscribers to a subset of Twilio Thailand Phone Numbers and are monitoring service stability. We will provide another update in 2 hours or as soon as more information becomes available.
  6. 08:13 UTC · monitoring
    We have observed a recovery in voice calls from network subscribers to a subset of Twilio Thailand Phone Numbers and are monitoring service stability. We will provide another update in 4 hours or as soon as more information becomes available.
  7. 12:14 UTC · resolved
    The incident has been resolved and voice calls from network subscribers to a subset of Twilio Thailand Phone Numbers are operating normally.
Source
Oct 19, 20268h 34mSEV 2
MMS Delivery Delays from a Subset of Twilio Long Codes to AT&T United StatesMMS messages sent from a subset of Twilio Long Codes to AT&T subscribers in the United States were delivered late. Twilio identified the cause, observed recovery around 03:10 UTC, and resolved the incident about two hours later.AI-graded · one location · CARRIER NETWORK - MMS Long Code, North America
Why this grade
  1. RULES · SEV 2
    Sev 2 because CARRIER NETWORK - MMS Long Code, North America had degraded performance
  2. CLAUDE · SEV 2 · SUBSET · HIGH CONFIDENCE · BACK AFTER 6H 44M
    MMS delivery from a subset of Twilio Long Codes to AT&T US subscribers was delayed for about nine hours; other networks were not reported affected.
  3. Claude Haiku 5.5 · prompt v11 · Oct 24, 2026 · Raw record
7 updates
  1. 20:26 UTC · investigating
    Twilio customers may be experiencing MMS delivery delays from a subset of Twilio Long Codes to AT&T network subscribers in the United States. Our team is actively investigating this issue. We will provide another update in 1 hour or as soon as more information becomes available.
  2. 21:27 UTC · investigating
    Twilio customers may be experiencing MMS delivery delays from a subset of Twilio Long Codes to AT&T network subscribers in the United States. Our team is actively investigating this issue. We will provide another update in 2 hours or as soon as more information becomes available.
  3. 21:36 UTC · identified
    Twilio customers may be experiencing MMS delivery delays from a subset of Twilio Long Codes to AT&T network subscribers in the United States. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 1 hour or as soon as more information becomes available.
  4. 22:37 UTC · identified
    Twilio customers may be experiencing MMS delivery delays from a subset of Twilio Long Codes to AT&T network subscribers in the United States. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 2 hours or as soon as more information becomes available.
  5. 00:46 UTC · identified
    Twilio customers may be experiencing MMS delivery delays from a subset of Twilio Long Codes to AT&T network subscribers in the United States. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 4 hours or as soon as more information becomes available.
  6. 03:10 UTC · monitoring
    We have observed a recovery in MMS delivery from a subset of Twilio Long Codes to AT&T network subscribers in the United States and are monitoring service stability. We will provide another update in 2 hours or as soon as more information becomes available.
  7. 05:01 UTC · resolved
    The incident has been resolved and MMS delivery from a subset of Twilio Long Codes to AT&T network subscribers in the United States is operating normally.
Source
Oct 19, 20263h 24mSEV 2
MMS Delivery Delays from a Subset of Twilio Long Codes to Telus CanadaMMS messages sent from a subset of Twilio Long Codes to Telus network subscribers in Canada were delivered late, starting 19:35 UTC. The provider observed recovery at 20:52 UTC and resolved the incident at 22:59 UTC. No cause details were given beyond identification.AI-graded · some customers · CARRIER NETWORK - MMS Long Code, North America +2
Why this grade
  1. RULES · SEV 2
    Sev 2 because CARRIER NETWORK - MMS Long Code, North America had degraded performance
  2. CLAUDE · SEV 2 · SUBSET · HIGH CONFIDENCE · BACK AFTER 1H 18M
    MMS delivery from a subset of Twilio long codes to Telus Canada subscribers was delayed for about three hours; other networks were unaffected.
  3. Claude Haiku 5.5 · prompt v11 · Oct 24, 2026 · Raw record
6 updates
  1. 19:35 UTC · investigating
    Twilio customers may be experiencing MMS delivery delays from a subset of Twilio Long Codes to Telus network subscribers in Canada. Our team is actively investigating this issue. We will provide another update in 1 hour or as soon as more information becomes available.
  2. 19:35 UTC · identified
    Twilio customers may be experiencing MMS delivery delays from a subset of Twilio Long Codes to Telus network subscribers in Canada. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 1 hour or as soon as more information becomes available.
  3. 19:37 UTC · identified
    Twilio customers may be experiencing MMS delivery delays from a subset of Twilio Long Codes to Telus network subscribers in Canada. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 1 hour or as soon as more information becomes available.
  4. 20:37 UTC · identified
    Twilio customers may be experiencing MMS delivery delays from a subset of Twilio Long Codes to Telus network subscribers in Canada. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 2 hours or as soon as more information becomes available.
  5. 20:52 UTC · monitoring
    We have observed a recovery in MMS delivery from a subset of Twilio Long Codes to Telus network subscribers in Canada and are monitoring service stability. We will provide another update in 2 hours or as soon as more information becomes available.
  6. 22:59 UTC · resolved
    The incident has been resolved and MMS delivery from a subset of Twilio Long Codes to Telus network subscribers in Canada is operating normally.
Source
Oct 19, 20262h 27mSEV 2
RCS Delivery Receipt Delays for AT&TTwilio's RCS messaging had delayed delivery receipts and delayed inbound messages for AT&T traffic from 17:21 to about 19:48 UTC on 2026-10-19. Engineers mitigated the issue at 18:43 and monitored until resolution.AI-graded · one model or feature · PROGRAMMABLE MESSAGING - RCS Messaging
Why this grade
  1. RULES · SEV 2
    Sev 2 because PROGRAMMABLE MESSAGING - RCS Messaging had degraded performance
  2. CLAUDE · SEV 2 · SINGLE · HIGH CONFIDENCE · BACK AFTER 1H 21M
    RCS delivery receipts and inbound messages were delayed for AT&T traffic for about two hours; other carriers were not named as affected.
  3. Claude Haiku 5.5 · prompt v11 · Oct 24, 2026 · Raw record
4 updates
  1. 17:21 UTC · investigating
    We are investigating an issue with RCS. Users may experience delays in delivery receipts and delays with inbound messages. We will provide another update in 1 hour or as soon as more information becomes available.
  2. 17:53 UTC · identified
    We have identified an issue with RCS. Users may experience delays in delivery receipts and delays with inbound messages. We will provide another update in 1 hour or as soon as more information becomes available.
  3. 18:43 UTC · monitoring
    Our engineers have mitigated the issue and are monitoring system performance. Delivery receipts and inbound messages are returning to normal for RCS traffic with AT&T. We will provide another update in 2 hours or as soon as more information becomes available.
  4. 19:48 UTC · resolved
    We have monitored and resolved the issue with RCS. All services are now operating normally at this time.
Source
Oct 19, 20263d 20hSEV 2
SMS Delivery Delays and Failures between a Subset of Twilio Long Codes and Multiple Networks in ItalySMS sent from a subset of Twilio Long Codes to subscribers on multiple Italian networks saw delivery delays and failures from October 19 to 23. Recovery was reported on several occasions, and the incident was marked resolved on October 23. No root cause or fix is given in the updates.AI-graded · one location · CARRIER NETWORK - SMS, Europe
Why this grade
  1. RULES · SEV 2
    Sev 2 because CARRIER NETWORK - SMS, Europe had degraded performance
  2. CLAUDE · SEV 2 · SUBSET · HIGH CONFIDENCE · BACK AFTER 2H 50M
    SMS from a subset of Twilio Long Codes to several Italian networks was delayed or failed for about four days; other traffic was fine.
  3. Claude Haiku 5.5 · prompt v11 · Oct 24, 2026 · Raw record
20 updates
  1. 16:53 UTC · investigating
    Twilio customers may be experiencing SMS delivery delays and failures between a subset of Twilio Long Codes and network subscribers on multiple networks in Italy. Our team is actively investigating this issue. We will provide another update in 1 hour or as soon as more information becomes available.
  2. 16:54 UTC · identified
    Twilio customers may be experiencing SMS delivery delays and delivery failures between a subset of Twilio Long Codes and network subscribers on multiple networks in Italy. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 1 hour or as soon as more information becomes available.
  3. 17:54 UTC · identified
    Twilio customers may be experiencing SMS delivery delays and failures between a subset of Twilio Long Codes and multiple networks in Italy. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 2 hours or as soon as more information becomes available.
  4. 19:43 UTC · monitoring
    We have observed a recovery in SMS delivery between a subset of Twilio Long Codes and network subscribers on multiple networks in Italy and are monitoring service stability. We will provide another update in 2 hours or as soon as more information becomes available.
  5. 21:44 UTC · monitoring
    We have observed a recovery in SMS delivery between a subset of Twilio Long Codes and network subscribers on multiple networks in Italy and are monitoring service stability. We will provide another update in 4 hours or as soon as more information becomes available.
  6. 23:31 UTC · identified
    Twilio customers may be experiencing SMS delivery delays and failures between a subset of Twilio Long Codes and network subscribers on multiple networks in Italy. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 1 hour or as soon as more information becomes available.
  7. 00:32 UTC · identified
    Twilio customers may be experiencing SMS delivery delays and failures between a subset of Twilio Long Codes and network subscribers on multiple networks in Italy. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 2 hours or as soon as more information becomes available.
  8. 02:32 UTC · identified
    Twilio customers may be experiencing SMS delivery delays and failures between a subset of Twilio Long Codes and network subscribers on multiple networks in Italy. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 4 hours or as soon as more information becomes available.
  9. 03:14 UTC · monitoring
    We have observed a recovery in SMS delivery between a subset of Twilio Long Codes and network subscribers on multiple networks in Italy and are monitoring service stability. We will provide another update in 2 hours or as soon as more information becomes available.
  10. 05:17 UTC · identified
    Twilio customers may be experiencing SMS delivery delays and failures between a subset of Twilio Long Codes and network subscribers on multiple networks in Italy. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 1 hour or as soon as more information becomes available.
  11. 06:17 UTC · identified
    Twilio customers may be experiencing SMS delivery delays and failures between a subset of Twilio Long Codes and network subscribers on multiple networks in Italy. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 2 hours or as soon as more information becomes available.
  12. 08:17 UTC · identified
    Twilio customers may be experiencing SMS delivery delays and failures between a subset of Twilio Long Codes and network subscribers on multiple networks in Italy. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 4 hours or as soon as more information becomes available.
  13. 12:18 UTC · identified
    Twilio customers may be experiencing SMS delivery delays and failures between a subset of Twilio Long Codes and network subscribers on multiple networks in Italy. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 8 hours or as soon as more information becomes available.
  14. 04:33 UTC · monitoring
    We have observed a recovery in SMS delivery between a subset of Twilio Long Codes and network subscribers on multiple networks in Italy and are monitoring service stability. We will provide another update in 2 hours or as soon as more information becomes available.
  15. 06:39 UTC · monitoring
    We have observed a recovery in SMS delivery between a subset of Twilio Long Codes and multiple networks in Italy and are monitoring service stability. We will provide another update in 4 hours or as soon as more information becomes available.
  16. 10:45 UTC · monitoring
    We have observed a recovery in SMS delivery between a subset of Twilio Long Codes and network subscribers on multiple networks in Italy and are monitoring service stability. We will provide another update in 8 hours or as soon as more information becomes available.
  17. 18:45 UTC · monitoring
    We have observed a recovery in SMS delivery between a subset of Twilio Long Codes and network subscribers on multiple networks in Italy and are monitoring service stability. We will provide another update in 16 hours or as soon as more information becomes available.
  18. 10:46 UTC · monitoring
    We have observed a recovery in SMS delivery between a subset of Twilio Long Codes and network subscribers on multiple networks in Italy and are monitoring service stability. We will provide another update in 24 hours or as soon as more information becomes available.
  19. 10:47 UTC · monitoring
    We have observed a recovery in SMS delivery between a subset of Twilio Long Codes and network subscribers on multiple networks in Italy and are monitoring service stability. We will provide another update in 24 hours or as soon as more information becomes available.
  20. 12:58 UTC · resolved
    The incident has been resolved and SMS delivery between a subset of Twilio Long Codes and affected networks in Italy is operating normally.
Source
Oct 19, 20267h 26mSEV 2
Voice Call Failures from a Subset of Twilio Phone Numbers to PortugalVoice calls from a subset of Twilio Phone Numbers to Portuguese network subscribers failed from about 15:06 to 22:31 UTC on 19 October. The provider identified the cause and monitored recovery before resolving the incident. No further cause or fix details were published.AI-graded · one location · CARRIER NETWORK - Voice, Europe
Why this grade
  1. RULES · SEV 2
    Sev 2 because CARRIER NETWORK - Voice, Europe had degraded performance
  2. CLAUDE · SEV 2 · SUBSET · HIGH CONFIDENCE · BACK AFTER 5H 25M
    Voice calls from a subset of Twilio numbers to Portuguese subscribers failed for about six hours; other destinations were unaffected.
  3. Claude Haiku 5.5 · prompt v11 · Oct 24, 2026 · Raw record
6 updates
  1. 15:06 UTC · investigating
    Twilio customers may be experiencing voice call failures from a subset of Twilio Phone Numbers to network subscribers in Portugal. Our team is actively investigating this issue. We will provide another update in 1 hour or as soon as more information becomes available.
  2. 16:06 UTC · investigating
    Twilio customers may be experiencing voice call failures from a subset of Twilio Phone Numbers to network subscribers in Portugal. Our team is actively investigating this issue. We will provide another update in 2 hours or as soon as more information becomes available.
  3. 18:06 UTC · investigating
    Twilio customers may be experiencing voice call failures from a subset of Twilio Phone Numbers to network subscribers in Portugal. Our team is actively investigating this issue. We will provide another update in 4 hours or as soon as more information becomes available.
  4. 20:30 UTC · identified
    Twilio customers may be experiencing voice call failures from a subset of Twilio Phone Numbers to network subscribers in Portugal. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 1 hour or as soon as more information becomes available.
  5. 20:30 UTC · monitoring
    We have observed a recovery in voice calls from a subset of Twilio Phone Numbers to network subscribers in Portugal and are monitoring service stability. We will provide another update in 2 hours or as soon as more information becomes available.
  6. 22:31 UTC · resolved
    The incident has been resolved and voice calls from a subset of Twilio Phone Numbers to network subscribers in Portugal are operating normally.
Source
Oct 16–22, 20265d 14hSEV 2
Voice Call Post Dial Delay from a Subset of Twilio Phone Numbers to Brazil2 incidents
  1. Fri, Oct 16 13:55 UTC25h 20mSEV 2
    Voice Call Post Dial Delay from a Subset of Twilio Phone Numbers to BrazilCalls from a subset of Twilio Phone Numbers to Brazilian mobile and network subscribers experienced post-dial delay from October 16 to October 17. The provider identified the cause and monitored recovery before resolving the incident after roughly 25 hours.AI-graded · one location · CARRIER NETWORK - Voice, Latin America
    Why this grade
    1. RULES · SEV 2
      Sev 2 because CARRIER NETWORK - Voice, Latin America had degraded performance
    2. CLAUDE · SEV 2 · SUBSET · HIGH CONFIDENCE · BACK AFTER 16H 15M
      Voice calls from a subset of Twilio numbers to Brazilian subscribers had post-dial delay for about a day; delays, not failures.
    3. Claude Haiku 5.5 · prompt v11 · Oct 24, 2026 · Raw record
    9 updates
    1. 13:55 UTC · investigating
      Twilio customers may be experiencing voice call post dial delay from a subset of Twilio Phone Numbers to network subscribers in Brazil. Our team is actively investigating this issue. We will provide another update in 1 hour or as soon as more information becomes available.
    2. 14:59 UTC · identified
      Twilio customers may be experiencing voice call post dial delay from a subset of Twilio Phone Numbers to network subscribers in Brazil. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 1 hour or as soon as more information becomes available.
    3. 15:59 UTC · identified
      Twilio customers may be experiencing voice call post dial delay from a subset of Twilio Phone Numbers to network subscribers in Brazil. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 2 hours or as soon as more information becomes available.
    4. 18:00 UTC · identified
      Twilio customers may be experiencing voice call post dial delay from a subset of Twilio Phone Numbers to network subscribers in Brazil. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 4 hours or as soon as more information becomes available.
    5. 22:05 UTC · identified
      Twilio customers may be experiencing voice call post dial delay from a subset of Twilio Phone Numbers to network subscribers in Brazil. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 8 hours or as soon as more information becomes available.
    6. 06:10 UTC · monitoring
      We have observed a recovery in voice calls from a subset of Twilio Phone Numbers to network subscribers in Brazil and are monitoring service stability. We will provide another update in 2 hours or as soon as more information becomes available.
    7. 08:13 UTC · monitoring
      We have observed a recovery in voice calls from a subset of Twilio Phone Numbers to network subscribers in Brazil and are monitoring service stability. We will provide another update in 4 hours or as soon as more information becomes available.
    8. 12:14 UTC · monitoring
      We have observed a recovery in voice calls from a subset of Twilio Phone Numbers to network subscribers in Brazil and are monitoring service stability. We will provide another update in 8 hours or as soon as more information becomes available.
    9. 15:14 UTC · resolved
      The incident has been resolved and voice calls from a subset of Twilio Phone Numbers to network subscribers in Brazil are operating normally.
    Source
  2. Mon, Oct 19 13:29 UTC2d 15hSEV 2
    Voice Call Failures and Post Dial Delay from a Subset of Twilio Mobile Numbers to BrazilVoice calls from a subset of Twilio mobile and phone numbers to Brazilian networks suffered post-dial delay and some call failures from October 19 to October 22. The provider identified the cause and later reported calls operating normally, but gave no further detail on the cause or fix.AI-graded · one location · CARRIER NETWORK - Voice, Latin America
    Why this grade
    1. RULES · SEV 2
      Sev 2 because CARRIER NETWORK - Voice, Latin America had degraded performance
    2. CLAUDE · SEV 2 · REGIONAL · HIGH CONFIDENCE
      Voice calls from a subset of Twilio numbers to Brazilian subscribers had post-dial delay and failures for about three days; other countries were not reported affected.
    3. Claude Haiku 5.5 · prompt v11 · Oct 24, 2026 · Raw record
    26 updates
    1. 13:29 UTC · investigating
      Twilio customers may be experiencing voice call post dial delay from a subset of Twilio Mobile Numbers to network subscribers in Brazil. Our team is actively investigating this issue. We will provide another update in 1 hour or as soon as more information becomes available.
    2. 14:29 UTC · investigating
      Twilio customers may be experiencing voice call post dial delay from a subset of Twilio Mobile Numbers to network subscribers in Brazil. Our team is actively investigating this issue. We will provide another update in 2 hours or as soon as more information becomes available.
    3. 16:29 UTC · investigating
      Twilio customers may be experiencing voice call post dial delay from a subset of Twilio Mobile Numbers to network subscribers in Brazil. Our team is actively investigating this issue. We will provide another update in 4 hours or as soon as more information becomes available.
    4. 16:31 UTC · identified
      Twilio customers may be experiencing voice call post dial delay from a subset of Twilio Mobile Numbers to network subscribers in Brazil. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 1 hour or as soon as more information becomes available.
    5. 17:33 UTC · identified
      Twilio customers may be experiencing voice call post dial delay from a subset of Twilio Mobile Numbers to network subscribers in Brazil. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 2 hours or as soon as more information becomes available.
    6. 19:00 UTC · identified
      Twilio customers may be experiencing voice call failures, and post dial delay from a subset of Twilio Mobile Numbers to network subscribers in Brazil. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 1 hour or as soon as more information becomes available.
    7. 20:00 UTC · identified
      Twilio customers may be experiencing voice call post dial delay from a subset of Twilio Mobile Numbers to network subscribers in Brazil. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 2 hours or as soon as more information becomes available.
    8. 20:44 UTC · identified
      Twilio customers may be experiencing voice call failures and post dial delay from a subset of Twilio Mobile Numbers to network subscribers in Brazil. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 1 hour or as soon as more information becomes available.
    9. 21:44 UTC · identified
      Twilio customers may be experiencing voice call failures and post dial delay from a subset of Twilio Mobile Numbers to network subscribers in Brazil. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 2 hours or as soon as more information becomes available.
    10. 22:00 UTC · identified
      Twilio customers may be experiencing voice call post dial delay from a subset of Twilio Mobile Numbers to network subscribers in Brazil. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 4 hours or as soon as more information becomes available.
    11. 22:51 UTC · monitoring
      We have observed a recovery in voice calls from a subset of Twilio Mobile Numbers to network subscribers in Brazil and are monitoring service stability. We will provide another update in 2 hours or as soon as more information becomes available.
    12. 00:57 UTC · monitoring
      We have observed a recovery in voice calls from a subset of Twilio Mobile Numbers to network subscribers in Brazil and are monitoring service stability. We will provide another update in 4 hours or as soon as more information becomes available.
    13. 04:58 UTC · monitoring
      We have observed a recovery in voice calls from a subset of Twilio Mobile Numbers to network subscribers in Brazil and are monitoring service stability. We will provide another update in 8 hours or as soon as more information becomes available.
    14. 12:40 UTC · identified
      Twilio customers may be experiencing voice call failures and post dial delay from a subset of Twilio Mobile Numbers to network subscribers in Brazil. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 1 hour or as soon as more information becomes available.
    15. 13:40 UTC · identified
      Twilio customers may be experiencing voice call failures and post dial delay from a subset of Twilio Mobile Numbers to network subscribers in Brazil. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 2 hours or as soon as more information becomes available.
    16. 15:41 UTC · identified
      Twilio customers may be experiencing voice call failures and post dial delay from a subset of Twilio Phone Numbers to network subscribers in Brazil. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 4 hours or as soon as more information becomes available.
    17. 18:25 UTC · monitoring
      We have observed a recovery in voice calls from a subset of Twilio Mobile Numbers to network subscribers in Brazil and are monitoring service stability. We will provide another update in 2 hours or as soon as more information becomes available.
    18. 20:25 UTC · monitoring
      We have observed a recovery in voice calls from a subset of Twilio Mobile Numbers to network subscribers in Brazil and are monitoring service stability. We will provide another update in 4 hours or as soon as more information becomes available.
    19. 00:27 UTC · monitoring
      We have observed a recovery in voice calls from a subset of Twilio Mobile Numbers to network subscribers in Brazil and are monitoring service stability. We will provide another update in 8 hours or as soon as more information becomes available.
    20. 08:33 UTC · monitoring
      We have observed a recovery in voice calls from a subset of Twilio Mobile Numbers to network subscribers in Brazil and are monitoring service stability. We will provide another update in 16 hours or as soon as more information becomes available.
    21. 19:13 UTC · identified
      Twilio customers may be experiencing voice call failures and post dial delay from a subset of Twilio Phone Numbers to network subscribers in Brazil. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 1 hour or as soon as more information becomes available.
    22. 20:14 UTC · identified
      Twilio customers may be experiencing voice call failures and post dial delay from a subset of Twilio Mobile Numbers to network subscribers in Brazil. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 2 hours or as soon as more information becomes available.
    23. 22:14 UTC · identified
      Twilio customers may be experiencing voice call failures and post dial delay from a subset of Twilio Mobile Numbers to network subscribers in Brazil. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 4 hours or as soon as more information becomes available.
    24. 23:35 UTC · monitoring
      We have observed a recovery in voice calls from a subset of Twilio Mobile Numbers to network subscribers in Brazil and are monitoring service stability. We will provide another update in 2 hours or as soon as more information becomes available.
    25. 01:41 UTC · monitoring
      We have observed a recovery in voice calls from a subset of Twilio Phone Numbers to network subscribers in Brazil and are monitoring service stability. We will provide another update in 4 hours or as soon as more information becomes available.
    26. 04:43 UTC · resolved
      The incident has been resolved and voice calls from a subset of Twilio Mobile Numbers to network subscribers in Brazil are operating normally.
    Source
Oct 19, 20266h 10mSEV 2
Voice Call Failures from a Subset of Callers to Twilio Denmark Phone NumbersVoice calls from a subset of network subscribers to Twilio Denmark Phone Numbers failed or were disrupted from about 09:11 to 15:21 UTC on 19 October. Updates reported recovery at 14:08 UTC and resolution at 15:21 UTC. No cause was given in the updates.AI-graded · one location · CARRIER NETWORK - Voice, Europe
Why this grade
  1. RULES · SEV 2
    Sev 2 because CARRIER NETWORK - Voice, Europe had degraded performance
  2. CLAUDE · SEV 2 · SUBSET · HIGH CONFIDENCE · BACK AFTER 4H 57M
    Voice calls from some network subscribers to Twilio Denmark numbers failed for about six hours; other callers and regions were not described as affected.
  3. Claude Haiku 5.5 · prompt v11 · Oct 24, 2026 · Raw record
8 updates
  1. 09:11 UTC · investigating
    Twilio customers may be experiencing voice call failures from network subscribers to Twilio Denmark Phone Numbers. Our team is actively investigating this issue. We will provide another update in 1 hour or as soon as more information becomes available.
  2. 09:44 UTC · investigating
    Twilio customers may be experiencing voice call failures from network subscribers to a subset of Twilio Denmark Phone Numbers. Our team is actively investigating this issue. We will provide another update in 1 hour or as soon as more information becomes available.
  3. 10:26 UTC · investigating
    Twilio customers may be experiencing voice call failures from network subscribers to Twilio Denmark Phone Numbers. Our team is actively investigating this issue. We will provide another update in 2 hours or as soon as more information becomes available.
  4. 10:45 UTC · investigating
    Twilio customers may be experiencing voice call failures from network subscribers to a subset of Twilio Denmark Phone Numbers. Our team is actively investigating this issue. We will provide another update in 2 hours or as soon as more information becomes available.
  5. 12:38 UTC · investigating
    Twilio customers may be experiencing voice call failures from network subscribers to Twilio Denmark Phone Numbers. Our team is actively investigating this issue. We will provide another update in 4 hours or as soon as more information becomes available.
  6. 12:47 UTC · investigating
    Twilio customers may be experiencing voice call failures from network subscribers to Twilio Denmark Phone Numbers. Our team is actively investigating this issue. We will provide another update in 4 hours or as soon as more information becomes available.
  7. 14:08 UTC · monitoring
    We have observed a recovery in voice calls from a subset of network subscribers to Twilio Denmark Phone Numbers and are monitoring service stability. We will provide another update in 2 hours or as soon as more information becomes available.
  8. 15:21 UTC · resolved
    The incident has been resolved and voice calls from a subset of network subscribers to Twilio Denmark Phone Numbers are operating normally.
Source
Oct 18–20, 202645h 34mSEV 2
SMS Delivery Delays from a Subset of Twilio Short Codes to Brisanet Brazil2 incidents
  1. Sun, Oct 18 22:41 UTC45h 34mSEV 2
    SMS Delivery Delays from a Subset of Twilio Short Codes to Brisanet BrazilSome Twilio Short Codes saw SMS delivery delays to Brisanet subscribers in Brazil from October 18 to October 20. Twilio observed recovery on October 19 and monitored, then identified the cause. Twilio said the carrier may retry for up to 24 hours before final status, and all systems were operating normally at resolution.AI-graded · one location · CARRIER NETWORK - SMS, Latin America
    Why this grade
    1. RULES · SEV 2
      Sev 2 because CARRIER NETWORK - SMS, Latin America had degraded performance
    2. CLAUDE · SEV 2 · SUBSET · HIGH CONFIDENCE · BACK AFTER 6H 25M
      SMS delivery to Brisanet subscribers in Brazil was delayed from a subset of Twilio Short Codes for about 40 hours; other carriers were unaffected.
    3. Claude Haiku 5.5 · prompt v11 · Oct 24, 2026 · Raw record
    14 updates
    1. 22:41 UTC · investigating
      Twilio customers may be experiencing SMS delivery delays from a subset of Twilio Short Codes to Brisanet network subscribers in Brazil. Our team is actively investigating this issue. We will provide another update in 1 hour or as soon as more information becomes available.
    2. 23:41 UTC · investigating
      Twilio customers may be experiencing SMS delivery delays from a subset of Twilio Short Codes to Brisanet network subscribers in Brazil. Our team is actively investigating this issue. We will provide another update in 2 hours or as soon as more information becomes available.
    3. 01:47 UTC · investigating
      Twilio customers may be experiencing SMS delivery delays from a subset of Twilio Short Codes to Brisanet network subscribers in Brazil. Our team is actively investigating this issue. We will provide another update in 4 hours or as soon as more information becomes available.
    4. 05:05 UTC · monitoring
      We have observed a recovery in SMS delivery from a subset of Twilio Short Codes to Brisanet network subscribers in Brazil and are monitoring service stability. We will provide another update in 2 hours or as soon as more information becomes available.
    5. 07:06 UTC · monitoring
      We have observed a recovery in SMS delivery from a subset of Twilio Short Codes to Brisanet network subscribers in Brazil and are monitoring service stability. We will provide another update in 4 hours or as soon as more information becomes available.
    6. 11:06 UTC · monitoring
      We have observed a recovery in SMS delivery from a subset of Twilio Short Codes to Brisanet network subscribers in Brazil and are monitoring service stability. We will provide another update in 8 hours or as soon as more information becomes available.
    7. 12:57 UTC · identified
      Twilio customers may be experiencing SMS delivery delays from a subset of Twilio Short Codes to Brisanet network subscribers in Brazil. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 1 hour or as soon as more information becomes available.
    8. 13:58 UTC · identified
      Twilio customers may be experiencing SMS delivery delays from a subset of Twilio Short Codes to Brisanet network subscribers in Brazil. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 2 hours or as soon as more information becomes available.
    9. 15:58 UTC · identified
      Twilio customers may be experiencing SMS delivery delays from a subset of Twilio Short Codes to Brisanet network subscribers in Brazil. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 4 hours or as soon as more information becomes available.
    10. 20:01 UTC · identified
      Twilio customers may be experiencing SMS delivery delays from a subset of Twilio Short Codes to Brisanet network subscribers in Brazil. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 8 hours or as soon as more information becomes available.
    11. 04:07 UTC · identified
      Twilio customers may be experiencing SMS delivery delays from a subset of Twilio Short Codes to Brisanet network subscribers in Brazil. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 16 hours or as soon as more information becomes available.
    12. 13:52 UTC · monitoring
      We have observed a recovery in SMS delivery from a subset of Twilio Short Codes to Brisanet network subscribers in Brazil and are monitoring service stability. We will provide another update in 2 hours or as soon as more information becomes available.
    13. 15:53 UTC · monitoring
      We have observed a recovery in SMS delivery from a subset of Twilio Short Codes to Brisanet network subscribers in Brazil and are monitoring service stability. We will provide another update in 4 hours or as soon as more information becomes available.
    14. 20:14 UTC · resolved
      We have completed our investigation. This event did not cause performance degradation beyond the expected behavior for this Brazilian carrier, which may retry delivery attempts for up to 24 hours before setting a final status. All systems are operating normally.
    Source
  2. Mon, Oct 19 02:41 UTC41h 31mSEV 2
    SMS Delivery Receipt Delays from Twilio to Surf Telecom BrazilDelivery receipts for SMS sent to Surf Telecom subscribers in Brazil were delayed from October 19 to October 20. Message delivery may have succeeded, but receipts lagged. Provider said the carrier may retry for up to 24 hours before final status and marked it resolved with normal operation.AI-graded · one model or feature · CARRIER NETWORK - SMS, Latin America
    Why this grade
    1. RULES · SEV 2
      Sev 2 because CARRIER NETWORK - SMS, Latin America had degraded performance
    2. CLAUDE · SEV 2 · SINGLE · MEDIUM CONFIDENCE · BACK AFTER 41H 31M
      SMS delivery receipts to one Brazilian carrier's subscribers were delayed for about 40 hours; messages were still delivered.
    3. Claude Haiku 5.5 · prompt v11 · Oct 24, 2026 · Raw record
    8 updates
    1. 02:41 UTC · investigating
      Twilio customers may be experiencing SMS delivery receipt delays from Twilio to Surf Telecom network subscribers in Brazil. Our team is actively investigating this issue. Message delivery may succeed, but delivery receipts may be delayed. We will provide another update in 1 hour or as soon as more information becomes available.
    2. 02:49 UTC · identified
      Twilio customers may be experiencing SMS delivery receipt delays from Twilio to Surf Telecom network subscribers in Brazil. Our team has identified the cause, and is working to resolve the issue. Message delivery may succeed, but delivery receipts may be delayed. We will provide another update in 1 hour or as soon as more information becomes available.
    3. 03:49 UTC · identified
      Twilio customers may be experiencing SMS delivery receipt delays from Twilio to Surf Telecom network subscribers in Brazil. Our team has identified the cause, and is working to resolve the issue. Message delivery may succeed, but delivery receipts may be delayed. We will provide another update in 2 hours or as soon as more information becomes available.
    4. 05:50 UTC · identified
      Twilio customers may be experiencing SMS delivery receipt delays from Twilio to Surf Telecom network subscribers in Brazil. Our team has identified the cause, and is working to resolve the issue. Message delivery may succeed, but delivery receipts may be delayed. We will provide another update in 4 hours or as soon as more information becomes available.
    5. 09:58 UTC · identified
      Twilio customers may be experiencing SMS delivery receipt delays from Twilio to Surf Telecom network subscribers in Brazil. Our team has identified the cause, and is working to resolve the issue. Message delivery may succeed, but delivery receipts may be delayed. We will provide another update in 8 hours or as soon as more information becomes available.
    6. 17:58 UTC · identified
      Twilio customers may be experiencing SMS delivery receipt delays from Twilio to Surf Telecom network subscribers in Brazil. Our team has identified the cause, and is working to resolve the issue. Message delivery may succeed, but delivery receipts may be delayed. We will provide another update in 16 hours or as soon as more information becomes available.
    7. 10:07 UTC · identified
      Twilio customers may be experiencing SMS delivery receipt delays from Twilio to Surf Telecom network subscribers in Brazil. Our team has identified the cause, and is working to resolve the issue. Message delivery may succeed, but delivery receipts may be delayed. We will provide another update in 24 hours or as soon as more information becomes available.
    8. 20:12 UTC · resolved
      We have completed our investigation. This event did not cause performance degradation beyond the expected behavior for this Brazilian carrier, which may retry delivery attempts for up to 24 hours before setting a final status. All systems are operating normally.
    Source
Oct 17, 202625h 03mSEV 2
SMS Delivery Failures from Twilio Alphanumeric Sender Type to Multiple Networks in TurkeyTwilio alphanumeric sender SMS to subscribers on multiple Turkish networks failed intermittently from October 17 to October 19, 2026. Recovery was reported several times and the problem returned before the incident was resolved. The provider did not describe a root cause.AI-graded · one location · CARRIER NETWORK - SMS, Europe
Why this grade
  1. RULES · SEV 2
    Sev 2 because CARRIER NETWORK - SMS, Europe had degraded performance
  2. CLAUDE · SEV 2 · REGIONAL · HIGH CONFIDENCE
    SMS from Twilio alphanumeric senders failed or was delayed to subscribers on multiple Turkish networks for about a day; other countries were not reported affected.
  3. Claude Haiku 5.5 · prompt v11 · Oct 24, 2026 · Raw record
13 updates
  1. 23:14 UTC · investigating
    Twilio customers may be experiencing SMS delivery failures from Twilio Alphanumeric Sender IDs to network subscribers on multiple networks in Turkey. Our team is actively investigating this issue. We will provide another update in 1 hour or as soon as more information becomes available.
  2. 23:17 UTC · identified
    Twilio customers may be experiencing SMS delivery failures from Twilio Alphanumeric Sender IDs to network subscribers on multiple networks in Turkey. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 1 hour or as soon as more information becomes available.
  3. 00:17 UTC · identified
    Twilio customers may be experiencing SMS delivery failures from Twilio Alphanumeric Sender IDs to network subscribers on multiple networks in Turkey. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 2 hours or as soon as more information becomes available.
  4. 02:18 UTC · identified
    Twilio customers may be experiencing SMS delivery failures from Twilio Alphanumeric Sender IDs to network subscribers on multiple networks in Turkey. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 4 hours or as soon as more information becomes available.
  5. 06:21 UTC · monitoring
    We have observed a recovery in SMS delivery from Twilio to network subscribers on multiple networks in Turkey and are monitoring service stability. We will provide another update in 2 hours or as soon as more information becomes available.
  6. 08:22 UTC · monitoring
    We have observed a recovery in SMS delivery from Twilio Alphanumeric Sender Type to network subscribers on multiple networks in Turkey and are monitoring service stability. We will provide another update in 4 hours or as soon as more information becomes available.
  7. 12:23 UTC · monitoring
    We have observed a recovery in SMS delivery from Twilio Alphanumeric Sender Type to network subscribers on multiple networks in Turkey and are monitoring service stability. We will provide another update in 8 hours or as soon as more information becomes available.
  8. 13:09 UTC · identified
    Twilio customers may be experiencing SMS delivery failures from Twilio Alphanumeric Sender IDs to network subscribers on multiple networks in Turkey. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 1 hour or as soon as more information becomes available.
  9. 14:10 UTC · identified
    Twilio customers may be experiencing SMS delivery failures from Twilio Alphanumeric Sender Type to network subscribers on multiple networks in Turkey. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 2 hours or as soon as more information becomes available.
  10. 16:12 UTC · identified
    Twilio customers may be experiencing SMS delivery failures from Twilio to network subscribers on multiple networks in Turkey. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 4 hours or as soon as more information becomes available.
  11. 20:12 UTC · identified
    Twilio customers may be experiencing SMS delivery failures from Twilio Alphanumeric Sender IDs to network subscribers on multiple networks in Turkey. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 8 hours or as soon as more information becomes available.
  12. 22:15 UTC · monitoring
    We have observed a recovery in SMS delivery from Twilio Alphanumeric Sender IDs to network subscribers on multiple networks in Turkey and are monitoring service stability. We will provide another update in 2 hours or as soon as more information becomes available.
  13. 00:17 UTC · resolved
    The incident has been resolved and SMS delivery from Twilio Alphanumeric Sender Type to network subscribers on affected networks in Turkey is operating normally.
Source
Oct 17, 20265h 03mSEV 2
5300 Errors on Singapore Client EdgeMultiple Twilio customers got 53000 errors on the Singapore edge client for Programmable Voice, causing unregistered events. Investigation started 17:07 UTC on Oct 17, 2026. Provider stopped observing the issue around 19:23 UTC, kept monitoring, and resolved the incident at 22:11 UTC. No root cause was given in the updates.AI-graded · regional · PROGRAMMABLE VOICE US1 - Client Web US1 +3
Why this grade
  1. RULES · SEV 2
    Sev 2 because PROGRAMMABLE VOICE US1 - Client Web US1 had degraded performance
  2. CLAUDE · SEV 2 · REGIONAL · MEDIUM CONFIDENCE · BACK AFTER 3H 14M
    Singapore edge client returned 53000 errors causing unregistered voice events for about five hours; other regions were not described as affected.
  3. Claude Haiku 5.5 · prompt v11 · Oct 24, 2026 · Raw record
8 updates
  1. 17:07 UTC · investigating
    Multiple customers have reported that they are receiving 53000 errors on the Singapore edge client causing unregistered events. Our engineers have been alerted and are investigating. We will provide an update when we have more details.
  2. 17:51 UTC · investigating
    We are currently investigating an issue with 53000 errors on the Singapore edge client causing unregistered events. We expect to provide another update in 30 minutes or as soon as more information becomes available
  3. 18:21 UTC · investigating
    We are currently investigating an issue with 53000 errors on the Singapore edge client causing unregistered events. We expect to provide another update in 1 hour or as soon as more information becomes available
  4. 19:23 UTC · investigating
    We are no longer observing the issue with 53000 errors on the Singapore edge client causing unregistered events, our engineering teams are still investigating the root cause. We expect to provide another update in 1 hour or as soon as more information becomes available.
  5. 20:21 UTC · monitoring
    We are no longer observing the issue with 53000 errors on the Singapore edge client causing unregistered events. Our engineering teams are continuing to monitor to ensure full service recovery. We will provide another update in 1 hour or as soon as more information becomes available.
  6. 20:36 UTC · monitoring
    We are no longer observing the issue with 53000 errors on the Singapore edge client causing unregistered events. Our engineering teams are continuing to monitor to ensure full service recovery. We will provide another update in 1 hour or as soon as more information becomes available.
  7. 21:39 UTC · monitoring
    We are no longer observing the issue with 53000 errors on the Singapore edge client causing unregistered events. Our engineering teams are continuing to monitor to ensure full service recovery. We will provide another update in 2 hours or as soon as more information becomes available.
  8. 22:11 UTC · resolved
    We are no longer observing the issue with 53000 errors on the Singapore edge client causing unregistered events. This incident has been resolved.
Source
Oct 16, 202620h 28mSEV 2
SMS Delivery Delays and Failures from a Subset of Twilio Alphanumeric Sender IDs and Long Codes to Multiple Networks in Czech RepublicA subset of Twilio Alphanumeric Sender IDs and Long Codes saw SMS delivery delays and failures to subscribers on multiple Czech Republic networks. The cause was identified, and delivery recovered gradually. Twilio resolved the incident about 14.5 hours after it started.AI-graded · one location · CARRIER NETWORK - SMS, Europe
Why this grade
  1. RULES · SEV 2
    Sev 2 because CARRIER NETWORK - SMS, Europe had degraded performance
  2. CLAUDE · SEV 2 · REGIONAL · HIGH CONFIDENCE · BACK AFTER 13H 33M
    SMS delivery delays and failures hit a subset of Alphanumeric and Long Code senders to several Czech networks for about 14 hours.
  3. Claude Haiku 5.5 · prompt v11 · Oct 24, 2026 · Raw record
9 updates
  1. 17:16 UTC · investigating
    Twilio customers may be experiencing SMS delivery delays and failures from a subset of Twilio Long Codes and Alphanumeric Sender IDs to network subscribers on multiple networks in the Czech Republic. Our team is actively investigating this issue. We will provide another update in 1 hour or as soon as more information becomes available.
  2. 18:06 UTC · identified
    Twilio customers may be experiencing SMS delivery delays and failures from a subset of Twilio Long Codes to network subscribers on multiple networks in the Czech Republic. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 1 hour or as soon as more information becomes available.
  3. 19:11 UTC · identified
    Twilio customers may be experiencing SMS delivery delays and failures from a subset of Twilio Alphanumeric Sender IDs and Long Codes to network subscribers on multiple networks in the Czech Republic. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 2 hours or as soon as more information becomes available.
  4. 21:41 UTC · identified
    Twilio customers may be experiencing SMS delivery delays and delivery failures from a subset of Twilio Alphanumeric Sender IDs and Long Codes to multiple networks in the Czech Republic. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 4 hours or as soon as more information becomes available.
  5. 01:52 UTC · identified
    Twilio customers may be experiencing SMS delivery delays and failures from a subset of Twilio alphanumeric sender IDs and long codes to network subscribers on multiple networks in the Czech Republic. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 8 hours or as soon as more information becomes available.
  6. 06:49 UTC · monitoring
    We have observed a recovery in SMS delivery from a subset of Twilio Alphanumeric and Long Codes to network subscribers on multiple networks in the Czech Republic and are monitoring service stability. We will provide another update in 2 hours or as soon as more information becomes available.
  7. 08:56 UTC · monitoring
    We have observed a recovery in SMS delivery from a subset of Twilio Alphanumeric Sender IDs and Long Codes to network subscribers on multiple networks in the Czech Republic and are monitoring service stability. We will provide another update in 4 hours or as soon as more information becomes available.
  8. 13:00 UTC · monitoring
    We have observed a recovery in SMS delivery from a subset of Twilio Alphanumeric Sender IDs and Long Codes to network subscribers on multiple networks in the Czech Republic and are monitoring service stability. We will provide another update in 8 hours or as soon as more information becomes available.
  9. 13:45 UTC · resolved
    The incident has been resolved and SMS delivery from a subset of Twilio Alphanumeric Sender IDs and Long Codes to affected networks in the Czech Republic is operating normally.
Source
Oct 9, 202613d 21hSEV 2
SMS Delivery Delays and Failures from a Subset of Twilio Alphanumeric Sender IDs to Mobile ChinaSome Twilio alphanumeric sender IDs saw SMS delivery delays and failures to China Mobile subscribers in China. Cause was identified, and a later update said there was no customer impact. Incident was resolved on 2026-10-23.AI-graded · one location · CARRIER NETWORK - SMS, APAC
Why this grade
  1. RULES · SEV 2
    Sev 2 because CARRIER NETWORK - SMS, APAC had degraded performance
  2. CLAUDE · SEV 2 · REGIONAL · MEDIUM CONFIDENCE · BACK AFTER 8H 53M
    SMS sent via some alphanumeric sender IDs to China Mobile subscribers was delayed or failed; other carriers and countries were not reported affected.
  3. Claude Haiku 5.5 · prompt v11 · Oct 24, 2026 · Raw record
7 updates
  1. 06:42 UTC · investigating
    Twilio customers may be experiencing SMS delivery delays and failures from a subset of Twilio Alphanumeric Sender IDs to China Mobile network subscribers in China. Our team is actively investigating this issue. We will provide another update in 1 hour or as soon as more information becomes available.
  2. 07:05 UTC · identified
    Twilio customers may be experiencing SMS delivery delays and failures from a subset of Twilio Alphanumeric Sender IDs to China Mobile network subscribers in China. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 1 hour or as soon as more information becomes available.
  3. 08:05 UTC · identified
    Twilio customers may be experiencing SMS delivery delays and failures from a subset of Twilio Alphanumeric Sender Type to Mobile network subscribers in China. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 2 hours or as soon as more information becomes available.
  4. 10:25 UTC · identified
    Twilio customers may be experiencing SMS delivery delays and failures from a subset of Twilio Alphanumeric Sender Type to China Mobile network subscribers in China. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 4 hours or as soon as more information becomes available.
  5. 14:31 UTC · identified
    Twilio customers may be experiencing SMS delivery delays and failures from a subset of Twilio Alphanumeric Sender Type to Mobile network subscribers in China. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 8 hours or as soon as more information becomes available.
  6. 15:35 UTC · monitoring
    We have completed our investigation and determined that this event did not result in any customer impact. All systems are operating normally.
  7. 03:55 UTC · resolved
    The incident has been resolved and SMS delivery from a subset of Twilio Alphanumeric Sender ID's to China Mobile network subscribers in China is operating normally.
Source
Sep 11, 202641d 14hSEV 2
MMS Delivery Failures From A Subset Of Network Subscribers In Australia To Twilio Australia Phone NumbersFor about six weeks, MMS messages from a subset of Telstra and other Australian network subscribers to Twilio Australia numbers were delayed or failed. Media over 1MB remained best-effort, and Twilio recommended keeping attachments under 1MB. Resolved October 23 as operating within documented specifications.AI-graded · one location · CARRIER NETWORK - MMS, APAC
Why this grade
  1. RULES · SEV 2
    Sev 2 because CARRIER NETWORK - MMS, APAC had degraded performance
  2. CLAUDE · SEV 2 · SUBSET · MEDIUM CONFIDENCE
    MMS from a subset of Australian carrier subscribers to Twilio Australia numbers was delayed or failed for weeks; media under 1MB was delivering.
  3. Claude Haiku 5.5 · prompt v11 · Oct 24, 2026 · Raw record
51 updates
  1. 09:43 UTC · investigating
    Twilio customers may be experiencing MMS delivery delays from a Subset of network subscribers in Australia to Twilio Australia Phone Numbers. Our team is actively investigating this issue. We will provide another update in 1 hour or as soon as more information becomes available.
  2. 11:02 UTC · identified
    Twilio customers may be experiencing MMS delivery delays from a Subset of network subscribers in Australia to Twilio Australia Phone Numbers. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 2 hours or as soon as more information becomes available.
  3. 13:19 UTC · investigating
    Twilio customers may be experiencing MMS delivery delays from a Subset of network subscribers in Australia to Twilio Australia Phone Numbers. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 8 hours or as soon as more information becomes available.
  4. 18:04 UTC · investigating
    Twilio customers may be experiencing MMS delivery delays from a Subset of network subscribers in Australia to Twilio Australia Phone Numbers. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 8 hours or as soon as more information becomes available.
  5. 02:20 UTC · identified
    Twilio customers may be experiencing MMS delivery delays from a Subset of network subscribers in Australia to Twilio Australia Phone Numbers. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 8 hours or as soon as more information becomes available.
  6. 18:23 UTC · investigating
    Twilio customers may be experiencing MMS delivery failures from Telstra network subscribers in Australia to a subset of Twilio Phone Numbers. Our team is actively investigating this issue. We will provide another update in 24 hours or as soon as more information becomes available.
  7. 18:24 UTC · investigating
    Twilio customers may be experiencing MMS delivery failures from Telstra network subscribers in Australia to a subset of Twilio Australia Phone Numbers. Our team is actively investigating this issue. We will provide another update in 24 hours or as soon as more information becomes available.
  8. 19:09 UTC · investigating
    Twilio customers may be experiencing MMS delivery delays from a Subset of network subscribers in Australia to Twilio Australia Phone Numbers. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 24 hours or as soon as more information becomes available.
  9. 02:05 UTC · investigating
    Twilio customers may be experiencing MMS delivery failures from a Subset of network subscribers in Australia to Twilio Australia Phone Numbers. Our team is actively investigating this issue. We will provide another update in 24 hours or as soon as more information becomes available.
  10. 03:08 UTC · investigating
    Twilio customers may be experiencing MMS delivery failures from Telstra network subscribers in Australia to a subset of Twilio Phone Numbers. Our team is actively investigating this issue. We will provide another update in 2 hours or as soon as more information becomes available.
  11. 05:09 UTC · investigating
    Twilio customers may be experiencing MMS delivery failures from Telstra network subscribers in Australia to a subset of Twilio Australia Phone Numbers. Our team is actively investigating this issue. We will provide another update in 4 hours or as soon as more information becomes available.
  12. 09:12 UTC · investigating
    Twilio customers may be experiencing MMS delivery failures from a Subset of network subscribers in Australia to Twilio Australia Phone Numbers. Our team is actively investigating this issue. We will provide another update in 8 hours or as soon as more information becomes available.
  13. 18:08 UTC · investigating
    Twilio customers may be experiencing MMS delivery failures from a Subset of network subscribers in Australia to Twilio Australia Phone Numbers. Our team is actively investigating this issue. We will provide another update in 16 hours or as soon as more information becomes available.
  14. 23:44 UTC · investigating
    We are continuing to investigate this issue.
  15. 23:44 UTC · investigating
    We are continuing to investigate this issue.
  16. 23:45 UTC · investigating
    Twilio customers may be experiencing MMS delivery failures from a Subset of network subscribers in Australia to Twilio Australia Phone Numbers. Our team is actively investigating this issue. We will provide another update in 8 hours or as soon as more information becomes available.
  17. 23:45 UTC · investigating
    Twilio customers may be experiencing MMS delivery failures from a Subset of network subscribers in Australia to Twilio Australia Phone Numbers. Our team is actively investigating this issue. We will provide another update in 16 hours or as soon as more information becomes available.
  18. 10:11 UTC · investigating
    Twilio customers may be experiencing MMS delivery failures from a Subset of network subscribers in Australia to Twilio Australia Phone Numbers. Our team is actively investigating this issue. We will provide another update in 24 hours or as soon as more information becomes available.
  19. 10:14 UTC · investigating
    Twilio customers may be experiencing MMS delivery failures from a Subset of network subscribers in Australia to Twilio Australia Phone Numbers. Our team is actively investigating this issue. We will provide another update in 24 hours or as soon as more information becomes available.
  20. 10:15 UTC · investigating
    Twilio customers may be experiencing MMS delivery failures from Telstra network subscribers in Australia to a subset of Twilio Phone Numbers. Our team is actively investigating this issue. We will provide another update in 24 hours or as soon as more information becomes available.
  21. 10:15 UTC · investigating
    Twilio customers may be experiencing MMS delivery failures from Telstra network subscribers in Australia to a subset of Twilio Phone Numbers. Our team is actively investigating this issue. We will provide another update in 24 hours or as soon as more information becomes available.
  22. 10:18 UTC · investigating
    Twilio customers may be experiencing MMS delivery failures from Telstra network subscribers in Australia to a subset of Twilio Phone Numbers. Our team is actively investigating this issue. We will provide another update in 24 hours or as soon as more information becomes available.
  23. 10:22 UTC · investigating
    Twilio customers may be experiencing MMS delivery failures from a Subset of network subscribers in Australia to Twilio Australia Phone Numbers. Our team is actively investigating this issue. We will provide another update in 24 hours or as soon as more information becomes available.
  24. 11:00 UTC · investigating
    Twilio customers may be experiencing MMS Delivery Failures from a Subset of Network subscribers in Australia to Twilio Australia Phone Numbers. Our team is actively investigating this issue. We will provide another update in 24 hours or as soon as more information becomes available.
  25. 11:01 UTC · investigating
    Twilio customers may be experiencing MMS delivery failures from Telstra network subscribers in Australia to a subset of Twilio Australia Phone Numbers. Our team is actively investigating this issue. We will provide another update in 24 hours or as soon as more information becomes available.
  26. 11:57 UTC · investigating
    Twilio customers may be experiencing MMS delivery failures from Telstra network subscribers in Australia to a subset of Twilio Australia Phone Numbers. Our team is actively investigating this issue. We will provide another update in 24 hours or as soon as more information becomes available.
  27. 11:59 UTC · investigating
    Twilio customers may be experiencing MMS Delivery Failures from a Subset of Network subscribers in Australia to Twilio Australia Phone Numbers. Our team is actively investigating this issue. We will provide another update in 24 hours or as soon as more information becomes available.
  28. 12:01 UTC · investigating
    Twilio customers may be experiencing MMS Delivery Failures from a Subset of Network subscribers in Australia to  Twilio Australia Phone Numbers. Our team is actively investigating this issue. We will provide another update in 24 hours or as soon as more information becomes available.
  29. 15:03 UTC · investigating
    Twilio customers may be experiencing MMS Delivery Failures from a Subset of Network subscribers in Australia to  Twilio Australia Phone Numbers. Our team is actively investigating this issue. We will provide another update in 24 hours or as soon as more information becomes available.
  30. 15:07 UTC · investigating
    Twilio customers may be experiencing MMS Delivery Failures from a Subset of Network subscribers in Australia to  Twilio Australia Phone Numbers. Our team is actively investigating this issue. We will provide another update in 24 hours or as soon as more information becomes available.
  31. 15:21 UTC · investigating
    Twilio customers may be experiencing MMS Delivery Failures from a Subset of Network subscribers in Australia to  Twilio Australia Phone Numbers. Our team is actively investigating this issue. We will provide another update in 24 hours or as soon as more information becomes available.
  32. 15:42 UTC · investigating
    Twilio customers may be experiencing MMS delivery failures from a subset of network subscribers in Australia to a subset of Twilio Australia Phone Numbers. Our team is actively investigating this issue. We will provide another update in 24 hours or as soon as more information becomes available.
  33. 15:45 UTC · investigating
    Twilio customers may be experiencing MMS delivery failures from a subset of network subscribers in Australia to a subset of Twilio Australia Phone Numbers. Our team is actively investigating this issue. We will provide another update in 24 hours or as soon as more information becomes available.
  34. 15:47 UTC · investigating
    Twilio customers may be experiencing MMS delivery failures from a subset of network subscribers in Australia to a subset of Twilio Australia Phone Numbers. Our team is actively investigating this issue. We will provide another update in 24 hours or as soon as more information becomes available.
  35. 20:08 UTC · investigating
    Twilio customers may be experiencing MMS delivery failures from a subset of network subscribers in Australia to a subset of Twilio Australia Phone Numbers. Our team is actively investigating this issue. We will provide another update in 24 hours or as soon as more information becomes available.
  36. 21:33 UTC · investigating
    Twilio customers may be experiencing MMS delivery failures from Telstra network subscribers in Australia to a subset of Twilio Australia Phone Numbers. Our team is actively investigating this issue. We will provide another update in 24 hours or as soon as more information becomes available.
  37. 23:00 UTC · investigating
    Twilio customers may be experiencing MMS delivery failures from a subset of network subscribers in Australia to a subset of Twilio Australia Phone Numbers. Our team is actively investigating this issue. We will provide another update in 24 hours or as soon as more information becomes available.
  38. 23:44 UTC · investigating
    Twilio customers may be experiencing MMS delivery failures from a subset of network subscribers in Australia to a subset of Twilio Australia Phone Numbers. Our team is actively investigating this issue. We will provide another update in 24 hours or as soon as more information becomes available.
  39. 23:46 UTC · investigating
    Twilio customers may be experiencing MMS delivery failures from a subset of network subscribers in Australia to a subset of Twilio Australia Phone Numbers. Our team is actively investigating this issue. We will provide another update in 24 hours or as soon as more information becomes available.
  40. 23:47 UTC · investigating
    Twilio customers may be experiencing MMS delivery failures from a subset of network subscribers in Australia to a subset of Twilio Australia Phone Numbers. Our team is actively investigating this issue. We will provide another update in 24 hours or as soon as more information becomes available.
  41. 02:28 UTC · investigating
    Twilio customers may be experiencing MMS delivery failures from a subset of network subscribers in Australia to a subset of Twilio Australia Phone Numbers. Our team is actively investigating this issue. We will provide another update in 24 hours or as soon as more information becomes available.
  42. 03:28 UTC · investigating
    Twilio customers may be experiencing MMS delivery failures from a subset of network subscribers in Australia to a subset of Twilio Australia Phone Numbers. Our team is actively investigating this issue. We will provide another update in 24 hours or as soon as more information becomes available.
  43. 03:57 UTC · investigating
    Twilio customers may be experiencing MMS delivery failures from a subset of network subscribers in Australia to a subset of Twilio Australia Phone Numbers. Our team is actively investigating this issue. We will provide another update in 24 hours or as soon as more information becomes available.
  44. 04:17 UTC · investigating
    Twilio customers may be experiencing MMS delivery failures from a subset of network subscribers in Australia to a subset of Twilio Australia Phone Numbers. Our team is actively investigating this issue. We will provide another update in 24 hours or as soon as more information becomes available.
  45. 04:20 UTC · investigating
    Twilio customers may be experiencing MMS delivery failures from a subset of network subscribers in Australia to a subset of Twilio Australia Phone Numbers. Our team is actively investigating this issue. We will provide another update in 24 hours or as soon as more information becomes available.
  46. 04:33 UTC · investigating
    Twilio customers may be experiencing MMS delivery failures from a subset of network subscribers in Australia to a subset of Twilio Australia Phone Numbers. Our team is actively investigating this issue. We will provide another update in 24 hours or as soon as more information becomes available.
  47. 05:48 UTC · investigating
    Twilio customers may be experiencing MMS delivery failures from a subset of network subscribers in Australia to a subset of Twilio Australia Phone Numbers. Our team is actively investigating this issue. We will provide another update in 24 hours or as soon as more information becomes available.
  48. 05:40 UTC · investigating
    Twilio customers may be experiencing MMS delivery failures from a subset of network subscribers in Australia to a subset of Twilio Australia Phone Numbers. Our team is actively investigating this issue. We will provide another update in 24 hours or as soon as more information becomes available.
  49. 06:13 UTC · investigating
    Our team continues to investigate MMS delivery issues from a subset of Australian network subscribers to Twilio Australia Phone Numbers. Media within our documented limit (<1MB) is delivering as intended. Media exceeding 1MB is processed on a best-effort basis and may encounter delays, delivery failures, or duplicate messages. We recommend keeping all attachments under 1MB. We will provide another update in 24 hours or as soon as more information becomes available.
  50. 07:19 UTC · investigating
    Our team continues to investigate MMS delivery issues from a subset of Australian network subscribers to Twilio Australia Phone Numbers. Media within our documented limit (<1MB) is delivering as intended. Media exceeding 1MB is processed on a best-effort basis and may encounter delays, delivery failures, or duplicate messages. We recommend keeping all attachments under 1MB. We will provide another update in 24 hours or as soon as more information becomes available.
  51. 08:36 UTC · resolved
    This incident has been resolved. MMS delivery from Australian network subscribers to Twilio Australia Phone Numbers is operating as expected within documented specifications. Media attachments under 1MB continue to deliver normally. Attachments exceeding 1MB remain subject to carrier constraints and best-effort delivery. We recommend keeping all media payloads under 1MB to ensure consistent delivery.
Source

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