Ciptex incident
Voice Call Failures and Post Dial Delay from a Subset of Twilio Phone Numbers to United Kingdom
Ciptex experienced a minor incident on August 27, 2026 affecting Twilio Voice, Europe, lasting 4d 2h. The incident has been resolved; the full update timeline is below.
Affected components
Update timeline
- investigating Aug 27, 2026, 11:45 AM UTC
We have detected potential service disruption through our monitoring systems and are actively investigating. A detailed assessment of the impact and affected services will be provided within the next 30 minutes.
- investigating Aug 27, 2026, 11:47 AM UTC
Our 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, and we will provide another update in 1 hour or as soon as more information becomes available.
- investigating Aug 27, 2026, 11:48 AM UTC
We are continuing to investigate this issue.
- identified Aug 27, 2026, 12:54 PM UTC
Our 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. The Twilio 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.
- identified Aug 27, 2026, 02:46 PM UTC
Our 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. The Twilio 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.
- identified Aug 27, 2026, 08:59 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. Twilio 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.
- identified Aug 28, 2026, 07:02 AM UTC
Our 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. The Twilio 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.
- monitoring Aug 28, 2026, 02:25 PM UTC
Twilio 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.
- monitoring Aug 28, 2026, 06:19 PM UTC
Twilio 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.
- monitoring Aug 28, 2026, 07:23 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.
- monitoring Aug 28, 2026, 08:54 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.
- monitoring Aug 28, 2026, 10:07 PM UTC
Twilio 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.
- monitoring Aug 29, 2026, 02:12 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.
- monitoring Aug 29, 2026, 11:42 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.
- monitoring Aug 29, 2026, 10:12 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 10 hours or as soon as more information becomes available.
- monitoring Aug 30, 2026, 07:54 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.
- resolved Aug 31, 2026, 02:28 PM UTC
Following comprehensive monitoring, we can confirm that the incident has been fully resolved and all services have returned to normal operation.