Dev APIs / SMS, voice and SendGrid email / Twilio

Twilio

SEV 2 · BLEEDING · 3d 2h

Since Sep 2026 · 57 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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GradeFLast 43 days
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Happening now
Oct 24, 2026ongoingSEV 2
Silent Network Authentication (SNA) Missing Redirects on Vodafone in United KingdomSilent Network Authentication device verification timed out on Vodafone UK, forcing fallback to SMS OTP; other carriers unaffected.AI-graded · regional · 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
    Silent Network Authentication device verification timed out on Vodafone UK, forcing fallback to SMS OTP; other carriers unaffected.
  3. Claude Haiku 5.5 · prompt v11 · Oct 24, 2026 · Raw record
1 update
  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.
Source
Oct 24, 2026ongoingSEV 2
Voice Call Failures and Post Dial Delay from a Subset of Twilio Phone Numbers to United StatesSince 14:17 UTC on 2026-10-24, some Twilio phone numbers saw voice call failures and post-dial delay when calling US network subscribers. The cause was identified, and the incident remained open with no resolution yet posted.AI-graded · some customers · 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 · MEDIUM CONFIDENCE
    Voice calls from a subset of Twilio numbers to US subscribers failed or had post-dial delay; scope and duration not fully stated, still open.
  3. Claude Haiku 5.5 · prompt v11 · Oct 24, 2026 · Raw record
5 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.
Source
Oct 24, 2026ongoingSEV 2
SMS Delivery Delays from Twilio to Claro Costa RicaTwilio SMS messages sent to Claro network subscribers in Costa Rica were delivered late. The cause was identified and delivery recovery was observed from 11:41 UTC on 24 October, with monitoring ongoing.AI-graded · regional · 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 Costa Rica was delayed for developers' messages; the rest of the network was unaffected.
  3. Claude Haiku 5.5 · prompt v11 · Oct 24, 2026 · Raw record
8 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.
Source
Oct 23, 2026ongoingSEV 2
Voice Call Post Dial Delay from Twilio Phone Numbers to ChileTwilio voice calls from its phone numbers to subscribers in Chile experienced post-dial delays starting 14:53 UTC on 23 October. The provider observed recovery from 22:59 UTC and is monitoring stability. No root cause was given in the updates.AI-graded · regional · 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 eight hours; other destinations were unaffected.
  3. Claude Haiku 5.5 · prompt v11 · Oct 24, 2026 · Raw record
8 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.
Source
Oct 21, 2026ongoingSEV 2
SMS Delivery Delays and Failures from Twilio Short Codes to Multiple Networks in IndiaSince 2026-10-21 16:32 UTC, Twilio Short Code SMS to subscribers on multiple Indian networks has been delayed and later partly failing. The provider has identified the cause and is working on a fix; the incident remains open with no resolution posted as of the last update.AI-graded · regional · 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
    Short code SMS to subscribers on multiple Indian networks was delayed and then failing, with no resolution yet posted.
  3. Claude Haiku 5.5 · prompt v11 · Oct 24, 2026 · Raw record
12 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.
Source
8 components affected8 degradedCARRIER NETWORK 7 · PROGRAMMABLE MESSAGING 1
All 8
  • Lookup Line Type Intelligence [Legacy API]degraded
  • MMS Long Code, North Americadegraded
  • MMS, APACdegraded
  • SMS, APACdegraded
  • Verify Silent Network Authdegraded
  • Voice, APACdegraded
  • Voice, North Americadegraded
  • RCS Messagingdegraded

Overview

30d90d1y
Admitted uptimeCustomer time not hit, by the provider's own account. Regional and partial incidents count in part.
99.092%Grade F
IncidentsEverything posted on the status page except scheduled maintenance.
570 Sev 1
Fully downMost customers down, by the provider's own account.
0m
Median fixMedian time to resolve. Half of incidents were fixed faster.
7h 26m
LongestLongest Sev 1–2 incident, start to resolved.
41d 14h
Since lastTime since the last counted incident was resolved.
ongoing

By area

FProduction
50INCIDENTS
43d 1hAFFECTED
Your users are hit: apps, APIs, databases, inference
Worst, 1y
SEV 2Oct 21, 2026 · ongoing · regionalSMS Delivery Delays and Failures from Twilio Short Codes to Multiple Networks in India
SEV 2Oct 21, 2026 · 26h 55m · some customersSMS Delivery Failures from United Kingdom to a Subset of Twilio Long Codes
SEV 2Oct 21, 2026 · 2d 2h · some customersVoice Call Post Dial Delay From a Subset of Twilio Phone Numbers to Israel
Most hit
CARRIER NETWORK - SMS, Latin America11
CARRIER NETWORK - SMS, Europe6
CARRIER NETWORK - Voice, Latin America4
CARRIER NETWORK - SMS, Middle East & Africa4
50 in the last 6 months.
BShipping
7INCIDENTS
36h 25mAFFECTED
You can't deploy, build or manage: CI, CLI, dashboard, auth, billing
Worst, 1y
SEV 3Oct 20, 2026 · 9h 50m · some customersWhatsApp Embedded Signup Configuration Failures
SEV 3Oct 21, 2026 · 19h 28m · regionalSilent Network Authentication (SNA) Missing Redirects and Gateway API (Lookup API) Failure Increase in Netherlands
SEV 3Oct 22, 2026 · 5h 14m · some customersHosted Number Verification Calls not Reaching Customers
Most hit
PHONE NUMBERS3
CARRIER NETWORK - Verify Silent Network Auth1
CARRIER NETWORK - Lookup Identity Match1
CARRIER NETWORK - Lookup SIM Swap1
7 in the last 6 months.
CleanSev 3–4Sev 1–2No data

Trend, last 12 months

57 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 down50
Sev 3 · Can't shipCan't deploy, build or manage it6
Sev 4 · PapercutDocs, status page, slow dashboard1

When it breaks

Start times, last 12 months, UTC.

What breaks

CARRIER NETWORK - SMS, Latin America11 incidents
CARRIER NETWORK - SMS, Europe6 incidents
CARRIER NETWORK - Voice, Latin America4 incidents
CARRIER NETWORK - SMS, Middle East & Africa4 incidents
CARRIER NETWORK - SMS Short Code, North America4 incidents
CARRIER NETWORK - SMS, APAC4 incidents

Where it breaks

Last 12 monthsPlaces named on the status page: cloud regions, cities, data centres. Incidents that name none stay off the map.
1 place · 56 with none named
Singapore: 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.
Singapore5h 03m

Communication

Updates eachStatus page updates per incident, on average.
8.1Last 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 50Sev 1–2

Incident history

Show all 57
Oct 24, 2026ongoingSEV 2
Silent Network Authentication (SNA) Missing Redirects on Vodafone in United KingdomSilent Network Authentication device verification timed out on Vodafone UK, forcing fallback to SMS OTP; other carriers unaffected.AI-graded · regional · 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
    Silent Network Authentication device verification timed out on Vodafone UK, forcing fallback to SMS OTP; other carriers unaffected.
  3. Claude Haiku 5.5 · prompt v11 · Oct 24, 2026 · Raw record
1 update
  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.
Source
Oct 24, 2026ongoingSEV 2
Voice Call Failures and Post Dial Delay from a Subset of Twilio Phone Numbers to United StatesSince 14:17 UTC on 2026-10-24, some Twilio phone numbers saw voice call failures and post-dial delay when calling US network subscribers. The cause was identified, and the incident remained open with no resolution yet posted.AI-graded · some customers · 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 · MEDIUM CONFIDENCE
    Voice calls from a subset of Twilio numbers to US subscribers failed or had post-dial delay; scope and duration not fully stated, still open.
  3. Claude Haiku 5.5 · prompt v11 · Oct 24, 2026 · Raw record
5 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.
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
    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, 2026ongoingSEV 2
SMS Delivery Delays from Twilio to Claro Costa RicaTwilio SMS messages sent to Claro network subscribers in Costa Rica were delivered late. The cause was identified and delivery recovery was observed from 11:41 UTC on 24 October, with monitoring ongoing.AI-graded · regional · 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 Costa Rica was delayed for developers' messages; the rest of the network was unaffected.
  3. Claude Haiku 5.5 · prompt v11 · Oct 24, 2026 · Raw record
8 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.
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 · some customers · 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
    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
    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 · regional · 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 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
    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, 2026ongoingSEV 2
Voice Call Post Dial Delay from Twilio Phone Numbers to ChileTwilio voice calls from its phone numbers to subscribers in Chile experienced post-dial delays starting 14:53 UTC on 23 October. The provider observed recovery from 22:59 UTC and is monitoring stability. No root cause was given in the updates.AI-graded · regional · 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 eight hours; other destinations were unaffected.
  3. Claude Haiku 5.5 · prompt v11 · Oct 24, 2026 · Raw record
8 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.
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
      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
      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 · regional · 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
    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
    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 · some customers · 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
    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 · regional · 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 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 · regional · 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
      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
    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
    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 · regional · 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 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

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