Ciptex incident
Twilio - Voice Call Audio Quality Degradation from a Subset of Twilio United States Phone Numbers to United States
Resolved after 2 hours 43 minutes, affecting Twilio PSTN and Twilio Voice, North America, on May 15, 2026.
Following comprehensive monitoring, we can confirm that the incident has been fully resolved and all services have returned to normal operation.
Affected components
Update timeline
- investigating May 15, 2026, 03:04 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 May 15, 2026, 03:06 AM UTC
Twilio customers may be experiencing voice call audio quality degradation from a subset of Twilio United States Phone Numbers to network subscribers in the United States. The Twilio network team is actively investigating this issue. We will provide another update in 1 hour or as soon as more information becomes available.
- monitoring May 15, 2026, 03:48 AM UTC
Twilio has observed a recovery in voice calls from a subset of Twilio United States Phone Numbers to network subscribers in the United States and are monitoring service stability. We will provide another update in 2 hours or as soon as more information becomes available.
- resolved May 15, 2026, 05:47 AM UTC
Following comprehensive monitoring, we can confirm that the incident has been fully resolved and all services have returned to normal operation.
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