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Voice Call Failures from a Subset of Twilio Phone Numbers to Switzerland

Minor Impact Resolved Duration: 1d 1h 9m September 4, 2026
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Current answer

Twilio experienced a minor incident: Voice Call Failures from a Subset of Twilio Phone Numbers to Switzerland. ServiceAlert observed recovery on Sep 5, 2026.

Official Twilio status page Current Twilio status ServiceAlert observed status change:

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Incident Lifecycle

Investigating Investigating Investigating Investigating Identified Identified Identified Identified Monitoring Monitoring Monitoring
Affected Components
Voice, Europe

Incident Timeline

Monitoring
We 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 in 8 hours or as soon as more information becomes available.
Sep 5, 2026 at 9:40 PM UTC
Monitoring
We 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 in 4 hours or as soon as more information becomes available.
Sep 5, 2026 at 5:34 PM UTC
Monitoring
We 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 in 2 hours or as soon as more information becomes available.
Sep 5, 2026 at 3:28 PM UTC
Identified
Twilio customers may be experiencing voice call failures from a subset of Twilio Phone Numbers to network subscribers in Switzerland. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 8 hours or as soon as more information becomes available.
Sep 5, 2026 at 8:24 AM UTC
Identified
Twilio customers may be experiencing voice call failures from a subset of Twilio Phone Numbers to network subscribers in Switzerland. Our team 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.
Sep 5, 2026 at 4:18 AM UTC
Identified
Twilio customers may be experiencing voice call failures from a subset of Twilio Phone Numbers to network subscribers in Switzerland. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 2 hours or as soon as more information becomes available.
Sep 5, 2026 at 2:18 AM UTC
Identified
Twilio customers may be experiencing voice call failures from a subset of Twilio Phone Numbers to network subscribers in Switzerland. Our 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.
Sep 5, 2026 at 1:18 AM UTC
Investigating
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. Our team is actively investigating this issue. We will provide another update in 4 hours or as soon as more information becomes available.
Sep 4, 2026 at 11:56 PM UTC
Investigating
Twilio customers may be experiencing voice call failures from a subset of Twilio Phone Numbers to network subscribers in the Netherlands, Switzerland, and Iceland. Our team is actively investigating this issue. We will provide another update in 4 hours or as soon as more information becomes available.
Sep 4, 2026 at 11:18 PM UTC
Investigating
Twilio customers may be experiencing voice call failures from a subset of Twilio Toll-Free Numbers, Landline Numbers, and Mobile Numbers to network subscribers on multiple networks in multiple countries. Our team is actively investigating this issue. We will provide another update in 2 hours or as soon as more information becomes available.
Sep 4, 2026 at 9:55 PM UTC
Investigating
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. Our team is actively investigating this issue. We will provide another update in 1 hour or as soon as more information becomes available.
Sep 4, 2026 at 8:55 PM UTC
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