Ciptex incident
Twilio - Voice Call Audio Quality Degradation from a Subset of Twilio United States Phone Numbers to United States
Ciptex experienced a minor incident on May 15, 2026 affecting Twilio PSTN and Twilio Voice, North America, lasting 2h 43m. The incident has been resolved; the full update timeline is below.
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.