Ciptex incident
Twilio - Voice Call Audio Quality Degradation From a Subset of Twilio Phone Numbers to Multiple Countries in Europe
Ciptex experienced a minor incident on August 11, 2026 affecting Twilio Voice, Europe, lasting 9h 3m. The incident has been resolved; the full update timeline is below.
Affected components
Update timeline
- investigating Aug 11, 2026, 01:13 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, 01:15 PM UTC
Twilio customers may be experiencing voice call audio quality degradation from Twilio Phone Numbers to network subscribers in multiple countries in Europe. The Twilio team is actively investigating this issue. We will provide another update in 1 hour or as soon as more information becomes available.
- investigating Aug 11, 2026, 02:11 PM UTC
Our customers may be experiencing voice call audio quality degradation from a subset of Twilio Phone Numbers to network subscribers in multiple countries in Europe. The Twilio team is actively investigating this issue. We will provide another update in 2 hours or as soon as more information becomes available.
- investigating Aug 11, 2026, 04:18 PM UTC
Our customers may be experiencing voice call audio quality degradation from a subset of Twilio Phone Numbers to network subscribers in multiple countries in Europe. The Twilio team is actively investigating this issue. We will provide another update in 4 hours or as soon as more information becomes available.
- monitoring Aug 11, 2026, 08:13 PM UTC
Twilio have observed a recovery in voice calls from a subset of Twilio Phone Numbers to network subscribers in multiple countries in Europe and are monitoring service stability. We will provide another update in 2 hours or as soon as more information becomes available.
- resolved Aug 11, 2026, 10:17 PM UTC
Following comprehensive monitoring, we can confirm that the incident has been fully resolved and all services have returned to normal operation.