Twilio incident
Silent Network Authentication (SNA) Failure Increase on AT&T in United States
Resolved after 3 hours 16 minutes, affecting Verify Silent Network Auth, on October 20, 2026.
The incident has been resolved and API transactions for Silent Network Authentication (SNA) on AT&T in the United States are operating normally.
Affected components
Update timeline
- investigating Oct 20, 2026, 05:28 AM UTC
Twilio customers may be experiencing verification failures during API transactions for Silent Network Authentication (SNA) on AT&T in the United States. Our team is actively investigating the issue. API transactions may temporarily fail over to secondary methods like SMS OTP. We will provide another update in 1 hour or as soon as more information becomes available.
- identified Oct 20, 2026, 05:39 AM UTC
Twilio customers may be experiencing verification failures during API transactions for Silent Network Authentication (SNA) on AT&T in the United States. API transactions may temporarily fail over to secondary methods like SMS OTP. 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.
- monitoring Oct 20, 2026, 06:44 AM UTC
We have observed recovery in API transactions for Silent Network Authentication (SNA) on AT&T 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.
- monitoring Oct 20, 2026, 08:45 AM UTC
We have observed recovery in API transactions for Silent Network Authentication (SNA) on AT&T 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.
- resolved Oct 20, 2026, 08:45 AM UTC
The incident has been resolved and API transactions for Silent Network Authentication (SNA) on AT&T in the United States are operating normally.
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