Voice call failures from a subset of Twilio phone numbers to Switzerland

Incident Report for Ciptex

Resolved

Following comprehensive monitoring, we can confirm that the incident has been fully resolved and all services have returned to normal operation.
Posted Sep 05, 2026 - 23:05 BST

Monitoring

Twilio have observed a recovery in voice calls from a subset of Twilio Phone Numbers to network subscribers in Switzerland and are monitoring service stability. We will provide another update as soon as more information becomes available.
Posted Sep 05, 2026 - 16:39 BST

Update

Twilio customers may be experiencing voice call failures from a subset of Twilio Phone Numbers to network subscribers in Switzerland. Twilio has identified the cause, and is working to resolve the issue. We will update you when more information becomes available.
Posted Sep 05, 2026 - 13:13 BST

Identified

Twilio customers may be experiencing voice call failures from a subset of Twilio Phone Numbers to network subscribers in Switzerland. Twilio has identified the cause, and is working to resolve the issue. We will provide another update in 4 hours or as soon as more information becomes available.
Posted Sep 05, 2026 - 08:50 BST

Update

Twilio customers may be experiencing voice call failures from a subset of Twilio Toll-Free, Landline, and Mobile Phone Numbers to network subscribers on multiple networks in multiple countries. Twilio engineers are actively investigating this issue.
Posted Sep 04, 2026 - 23:02 BST

Investigating

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.
Posted Sep 04, 2026 - 22:08 BST
This incident affected: Twilio (Twilio Voice, Europe).