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

Incident Report for Twilio

Resolved

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

Posted May 19, 2026 - 05:01 PDT

Update

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.

Posted May 19, 2026 - 00:56 PDT

Monitoring

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.

Posted May 18, 2026 - 22:54 PDT

Update

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.

Posted May 17, 2026 - 22:51 PDT

Update

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.

Posted May 16, 2026 - 22:46 PDT

Update

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.

Posted May 15, 2026 - 22:45 PDT

Update

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.

Posted May 15, 2026 - 06:44 PDT

Update

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.

Posted May 14, 2026 - 22:37 PDT

Update

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.

Posted May 14, 2026 - 18:34 PDT

Update

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.

Posted May 14, 2026 - 16:34 PDT

Update

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.

Posted May 14, 2026 - 15:33 PDT

Update

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.

Posted May 14, 2026 - 15:01 PDT

Identified

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.

Posted May 14, 2026 - 13:58 PDT

Investigating

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.

Posted May 14, 2026 - 13:50 PDT

This incident affected: CARRIER NETWORK (SMS, Latin America).