SMS Delivery Failures from a Subset of Twilio Alphanumeric Sender IDs to Altan Redes Mexico

Incident Report for Twilio

Resolved

The incident has been resolved and SMS delivery from a subset of Twilio Alphanumeric Sender IDs to Altan Redes network subscribers in Mexico is operating normally.

Posted Aug 21, 2026 - 00:27 PDT

Monitoring

We have observed a recovery in SMS delivery from a subset of Twilio Alphanumeric Sender IDs to Altan Redes 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 Aug 20, 2026 - 23:57 PDT

Identified

Twilio customers may be experiencing SMS delivery failures from a subset of Twilio Alphanumeric Sender IDs to Altan Redes 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 Aug 20, 2026 - 22:52 PDT

Update

Twilio customers may be experiencing SMS delivery failures from a subset of Twilio Alphanumeric Sender IDs to Altan Redes 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.

Posted Aug 20, 2026 - 21:08 PDT

Investigating

Twilio customers may be experiencing SMS delivery failures from a subset of Twilio Alphanumeric Sender IDs to Altan Redes 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 Aug 20, 2026 - 20:08 PDT

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