Twilio incident
Subset of Inbound Calls from AT&T are Failing Shaken/Stir Verification
Twilio experienced a minor incident on June 3, 2026 affecting Voice, North America, lasting 4h 56m. The incident has been resolved; the full update timeline is below.
Affected components
Update timeline
- investigating Jun 03, 2026, 06:40 PM UTC
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.
- investigating Jun 03, 2026, 07:42 PM UTC
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.
- investigating Jun 03, 2026, 08:42 PM UTC
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.
- monitoring Jun 03, 2026, 11:03 PM UTC
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.
- resolved Jun 03, 2026, 11:36 PM UTC
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.