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

Incident Report for Twilio

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.
Posted Jul 15, 2026 - 14:11 PDT

Monitoring

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.
Posted Jul 15, 2026 - 12:07 PDT

Update

Twilio customers may be experiencing SMS delivery delays 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 2 hours or as soon as more information becomes available.
Posted Jul 15, 2026 - 11:16 PDT

Identified

Twilio customers may be experiencing SMS delivery delays 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.
Posted Jul 15, 2026 - 10:16 PDT

Investigating

Twilio customers may be experiencing SMS delivery delays from a subset of Twilio 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.
Posted Jul 15, 2026 - 09:57 PDT
This incident affected: CARRIER NETWORK (SMS Long Code, North America).