Small Number of Voice Calls Are Failing Stir/Shaken Attestation

Incident Report for Twilio

Resolved

The issue that caused a small number of Voice calls to fail Stir/Shaken Attestation has been resolved and is operating normally at this time.

Posted Jul 22, 2025 - 20:54 PDT

Update

We continue observing recovery in issue that is causing a small number of Voice calls to fail Stir/Shaken Attestation. Due to this issue, these voice calls are getting signed as Attestation C. We will continue monitoring the service to ensure a full recovery. We will provide another update in 16 hours or as soon as more information becomes available.

Posted Jul 22, 2025 - 16:42 PDT

Update

We continue observing recovery in issue that is causing a small number of Voice calls to fail Stir/Shaken Attestation. Due to this issue, these voice calls are getting signed as Attestation C. We will continue monitoring the service to ensure a full recovery. We will provide another update in 8 hours or as soon as more information becomes available.

Posted Jul 22, 2025 - 08:47 PDT

Update

We are observing recovery in issue that is causing a small number of Voice calls to fail Stir/Shaken Attestation. Due to this issue, these voice calls are getting signed as Attestation C. We will continue monitoring the service to ensure a full recovery. We will provide another update in 8 hours or as soon as more information becomes available.

Posted Jul 22, 2025 - 00:58 PDT

Update

We are observing recovery in issue that is causing a small number of Voice calls to fail Stir/Shaken Attestation. Due to this issue, these voice calls are getting signed as Attestation C. We will continue monitoring the service to ensure a full recovery. We will provide another update in 2 hours or as soon as more information becomes available.

Posted Jul 21, 2025 - 23:00 PDT

Monitoring

We are observing recovery in issue that is causing a small number of Voice calls to fail Stir/Shaken Attestation. Due to this issue, these voice calls are getting signed as Attestation C. We will continue monitoring the service to ensure a full recovery. We will provide another update in 2 hours or as soon as more information becomes available.

Posted Jul 21, 2025 - 21:01 PDT

Investigating

We are currently investigating an issue that is causing a small number of Voice calls to fail Stir/Shaken Attestation. Due to this issue, these voice calls are getting signed as Attestation C. Our engineering team is working to resolve the issue. We will provide another update in 1 hour or as soon as more information becomes available.

Posted Jul 21, 2025 - 20:00 PDT

This incident affected: PROGRAMMABLE VOICE US1 (Voice REST API US1).