Subset of Inbound Calls from AT&T are Failing Shaken/Stir Verification

Incident Report for Twilio

Resolved

The issues for Shaken/Stir verification failures for inbound calls originating from the AT&T network the United States has been resolved and it is operating normally at this time.

Posted Jun 03, 2026 - 16:36 PDT

Monitoring

We have started seeing recovery for Shaken/Stir verification failures for inbound calls originating from the AT&T network the United States. We will continue to monitor to ensure a full recovery. We expect to provide another update in 30 minutes or as soon as more information becomes available.

Posted Jun 03, 2026 - 16:03 PDT

Update

Twilio customers may be experiencing Shaken/Stir verification failures for inbound calls originating from the AT&T network the United States. Our team is actively investigating this issue. We will provide another update in 2 hours or as soon as more information becomes available.

Posted Jun 03, 2026 - 13:42 PDT

Update

Twilio customers may be experiencing Shaken/Stir verification failures for inbound calls originating from the AT&T network 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 Jun 03, 2026 - 12:42 PDT

Investigating

Our monitoring systems have detected a potential issue with Shaken/Stir validation for a subset of inbound calls. Our engineers have been alerted and are investigating. We will provide an update when we have more details.

Posted Jun 03, 2026 - 11:40 PDT

This incident affected: CARRIER NETWORK (Voice, North America).