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Outage in Twilio

SMS Delivery Failures and Delays between Twilio Phone Numbers and AT&T in Mexico

Resolved Minor
May 14, 2026 - Started 25 days ago - Lasted 5 days
Official incident page

Incident Report

Summary AI Generated

Twilio experienced SMS delivery failures and delays between Twilio phone numbers and AT&T network subscribers in Mexico for over 4 days. The incident affected SMS services in the Latin America region, preventing reliable message delivery to AT&T customers in Mexico. The issue was resolved after the team identified the root cause and implemented a fix, with service returning to normal operations.

Twilio customers may be experiencing SMS delivery failures from Twilio Phone Numbers to AT&T 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.
Components affected
Twilio SMS, Latin America

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Latest Updates ( sorted recent to last )
RESOLVED 21 days ago - at 05/19/2026 12:01PM

The incident has been resolved and SMS delivery between Twilio Phone Numbers and AT&T network subscribers in Mexico is operating normally.

MONITORING 21 days ago - at 05/19/2026 07:56AM

We have observed a recovery in SMS delivery between Twilio Phone Numbers and AT&T network subscribers in Mexico and are monitoring service stability. We will provide another update in 4 hours or as soon as more information becomes available.

MONITORING 21 days ago - at 05/19/2026 05:54AM

We have observed a recovery in SMS delivery between Twilio Phone Numbers and AT&T 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.

IDENTIFIED 22 days ago - at 05/18/2026 05:51AM

Twilio customers may be experiencing SMS delivery failures between Twilio Phone Numbers and AT&T network subscribers in Mexico. 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.

IDENTIFIED 23 days ago - at 05/17/2026 05:46AM

Twilio customers may be experiencing SMS delivery delays and failures between Twilio Phone Numbers and AT&T network subscribers in Mexico. 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.

IDENTIFIED 24 days ago - at 05/16/2026 05:45AM

Twilio customers may be experiencing SMS delivery failures and delays between Twilio Phone Numbers and AT&T network subscribers in Mexico. 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.

IDENTIFIED 25 days ago - at 05/15/2026 01:44PM

Twilio customers may be experiencing SMS delivery delays and failures between Twilio Phone Numbers and AT&T network subscribers in Mexico. 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.

IDENTIFIED 25 days ago - at 05/15/2026 05:37AM

Twilio customers may be experiencing SMS delivery failures between Twilio Phone Numbers and AT&T network subscribers in Mexico. 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.

IDENTIFIED 25 days ago - at 05/15/2026 01:34AM

Twilio customers may be experiencing SMS delivery delays and failures between Twilio Phone Numbers and AT&T network subscribers in Mexico. 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.

IDENTIFIED 25 days ago - at 05/14/2026 11:34PM

Twilio customers may be experiencing SMS delivery delays and failures between Twilio Phone Numbers and AT&T network subscribers in Mexico. 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.

IDENTIFIED 25 days ago - at 05/14/2026 10:33PM

Twilio customers may be experiencing SMS delivery failures between Twilio Phone Numbers and AT&T network subscribers in Mexico. 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.

IDENTIFIED 25 days ago - at 05/14/2026 10:01PM

Twilio customers may be experiencing SMS delivery failures from Twilio Phone Numbers to AT&T network subscribers in Mexico. 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.

IDENTIFIED 25 days ago - at 05/14/2026 08:58PM

Twilio customers may be experiencing SMS delivery failures from Twilio Phone Numbers to AT&T network subscribers in Mexico. 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.

INVESTIGATING 25 days ago - at 05/14/2026 08:50PM

Twilio customers may be experiencing SMS delivery failures from Twilio Phone Numbers to AT&T 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.

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