SMS Delivery Failures from a Subset of Twilio Long Codes to AT&T United States

Resolved

The incident has been resolved and SMS delivery from a subset of Twilio Long Codes to AT&T network subscribers in the United States is operating normally.

Update

We have observed a recovery in SMS 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 4 hours or as soon as more information becomes available.

Update

We have observed a recovery in SMS 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.

Update

Twilio customers may be experiencing SMS delivery failures 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.

Investigating

Twilio customers may be experiencing SMS delivery failures from a subset of Twilio Short Codes and 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.