Voice Call Failures and Post Dial Delay from a Subset of Twilio Phone Numbers to United Kingdom

Update timeline

1. investigating Aug 27, 2026, 11:43 AM UTC

   Twilio customers may be experiencing voice call failures and post dial delay from a subset of Twilio Phone Numbers to network subscribers in the United Kingdom. Our team is actively investigating this issue. We will provide another update in 1 hour or as soon as more information becomes available.

2. identified Aug 27, 2026, 12:28 PM UTC

   Twilio customers may be experiencing voice call post dial delay and call failures from a subset of Twilio Phone Numbers to network subscribers in the United Kingdom. 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.

3. identified Aug 27, 2026, 01:34 PM UTC

   Twilio customers may be experiencing voice call post dial delay and failures from a subset of Twilio Phone Numbers to network subscribers in the United Kingdom. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 2 hours or as soon as more information becomes available.

4. identified Aug 27, 2026, 03:34 PM UTC

   Twilio customers may be experiencing voice call failures and post dial delay from a subset of Twilio Phone Numbers to network subscribers in the United Kingdom. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 4 hours or as soon as more information becomes available.

5. identified Aug 27, 2026, 07:35 PM UTC

   Twilio customers may be experiencing voice call failures and post dial delay from a subset of Twilio Phone Numbers to network subscribers in the United Kingdom. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 8 hours or as soon as more information becomes available.

6. identified Aug 28, 2026, 03:35 AM UTC

   Twilio customers may be experiencing voice call post dial delay and failures from a subset of Twilio Phone Numbers to network subscribers in the United Kingdom. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 16 hours or as soon as more information becomes available.

7. monitoring Aug 28, 2026, 02:22 PM UTC

   We have observed a recovery in voice calls from a subset of Twilio Phone Numbers to network subscribers in the United Kingdom and are monitoring service stability. We will provide another update in 2 hours or as soon as more information becomes available.

8. monitoring Aug 28, 2026, 06:44 PM UTC

   We have observed a recovery in voice calls from a subset of Twilio Phone Numbers to network subscribers in the United Kingdom and are monitoring service stability. We will provide another update in 2 hours or as soon as more information becomes available.

9. monitoring Aug 28, 2026, 08:44 PM UTC

   We have observed a recovery in voice calls from a subset of Twilio Phone Numbers to network subscribers in the United Kingdom and are monitoring service stability. We will provide another update in 4 hours or as soon as more information becomes available.

10. monitoring Aug 29, 2026, 12:45 AM UTC

    We have observed a recovery in voice calls from a subset of Twilio Phone Numbers to network subscribers in the United Kingdom and are monitoring service stability. We will provide another update in 8 hours or as soon as more information becomes available.

11. monitoring Aug 29, 2026, 08:46 AM UTC

    We have observed a recovery in voice calls from a subset of Twilio Phone Numbers to network subscribers in the United Kingdom and are monitoring service stability. We will provide another update in 16 hours or as soon as more information becomes available.

12. monitoring Aug 30, 2026, 07:24 AM UTC

    We have observed a recovery in voice calls from a subset of Twilio Phone Numbers to network subscribers in the United Kingdom and are monitoring service stability. We will provide another update in 24 hours or as soon as more information becomes available.

13. monitoring Aug 31, 2026, 07:25 AM UTC

    We have observed a recovery in voice calls from a subset of Twilio Phone Numbers to network subscribers in the United Kingdom and are monitoring service stability. We will provide another update in 24 hours or as soon as more information becomes available.

14. resolved Aug 31, 2026, 02:26 PM UTC

    The incident has been resolved and voice calls from a subset of Twilio Phone Numbers to network subscribers in the United Kingdom are operating normally.