Silent Network Authentication (SNA) Failure Increase on AT&T in United States
View the provider incident record →Current answer
Twilio experienced a minor incident: Silent Network Authentication (SNA) Failure Increase on AT&T in United States. ServiceAlert observed recovery on Oct 20, 2026.
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Incident Lifecycle
Affected Components
Verify Silent Network Auth
Incident Timeline
Monitoring
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.
Oct 20, 2026 at 6:44 AM UTC
Identified
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.
Oct 20, 2026 at 5:39 AM UTC
Investigating
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.
Oct 20, 2026 at 5:28 AM UTC
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