Ciptex incident
Twilio - Voice Call Failures from a Subset of Twilio Phone Numbers to Germany
Ciptex experienced a notice incident on August 11, 2026 affecting Twilio Voice, Europe, lasting 9h 16m. The incident has been resolved; the full update timeline is below.
Affected components
Update timeline
- investigating Aug 11, 2026, 12:28 PM 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 11, 2026, 12:31 PM UTC
Twilio customers may be experiencing voice call failures from Twilio Phone Numbers to Telefonica network subscribers in Germany. The Twilio team is actively investigating this issue. We will provide another update in 1 hour or as soon as more information becomes available.
- identified Aug 11, 2026, 12:45 PM UTC
The Twilio team has identified the cause of this issue, 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 11, 2026, 01:49 PM UTC
Our customers may be experiencing voice call failures from a subset of Twilio Phone Numbers to network subscribers in Germany. The Twilio 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.
- identified Aug 11, 2026, 03:31 PM UTC
We are continuing to work on a fix for this issue.
- monitoring Aug 11, 2026, 04:12 PM UTC
Twilio have observed a recovery in voice calls from a subset of Twilio Phone Numbers to Telefonica network subscribers in Germany, and are monitoring service stability. We will provide another update in 2 hours or as soon as more information becomes available.
- monitoring Aug 11, 2026, 04:15 PM UTC
We are continuing to monitor for any further issues.
- monitoring Aug 11, 2026, 04:19 PM UTC
Twilio have observed a recovery in voice calls from a subset of Twilio Phone Numbers to network subscribers in Germany, and are monitoring service stability. We will provide another update in 4 hours or as soon as more information becomes available.
- monitoring Aug 11, 2026, 05:19 PM UTC
Twilio have observed a recovery in voice calls from a subset of Twilio Phone Numbers to network subscribers in Germany, and are monitoring service stability. We will provide another update in 4 hours or as soon as more information becomes available.
- resolved Aug 11, 2026, 09:45 PM UTC
Following comprehensive monitoring, we can confirm that the incident has been fully resolved and all services have returned to normal operation.