SMS Delivery Delays and Failures From United States to a Subset of Twilio Phone Numbers

Incident Report for Twilio

Resolved

The incident has been resolved and SMS delivery from the United States to a subset of Twilio Phone Numbers is operating normally.

Posted May 29, 2026 - 00:13 PDT

Monitoring

We have observed a recovery in SMS delivery from network subscribers to a subset of Twilio United States Phone Numbers and are monitoring service stability. We will provide another update in 2 hours or as soon as more information becomes available.

Posted May 29, 2026 - 00:10 PDT

Identified

Twilio customers may be experiencing SMS delivery delays and failures from network subscribers in the United States to a subset of Twilio Phone Numbers. 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 29, 2026 - 00:09 PDT

Investigating

Twilio customers may be experiencing SMS delivery delays and failures from network subscribers to a subset of Twilio United States Phone Numbers. 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 28, 2026 - 23:18 PDT

This incident affected: CARRIER NETWORK (SMS Long Code, North America, SMS Short Code, North America, SMS Toll-Free, North America) and ZIPWHIP MESSAGING (SMS Toll-Free, North America).