Ciptex incident
Twilio - Voice Call Failures From Network Subscribers to Twilio United States Phone Numbers
Resolved after 1 hour 39 minutes, on August 18, 2026.
Following comprehensive monitoring, we can confirm that the incident has been fully resolved and all services have returned to normal operation.
Update timeline
- investigating Aug 18, 2026, 02:58 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 18, 2026, 03:01 PM UTC
We are continuing to investigate this issue.
- identified Aug 18, 2026, 04:00 PM UTC
Twilio customers may be experiencing voice call failures from T-Mobile network subscribers in the United States to a subset of Twilio United States Phone Numbers. 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.
- resolved Aug 18, 2026, 04:38 PM 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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