Outage in Twilio
Voice Call Failures from a Subset of Twilio Phone Numbers to Switzerland
Resolved MinorIncident Report
Summary AI Generated
Twilio experienced a 25-hour incident where voice calls from a subset of Toll-Free, Landline, and Mobile Phone Numbers failed to reach network subscribers in Switzerland (and initially other countries including the Netherlands and Iceland). The cause was identified, and recovery was observed incrementally throughout September 5, 2026, with the service entering monitoring phases before full resolution. The incident was fully resolved at 15:04 PT on September 5, 2026, with voice calls confirmed operating normally.
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.
Components affected
Twilio Voice, EuropeTrusted by 1,000+ teams
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Latest Updates ( sorted recent to last )
RESOLVED
2 days ago - at 09/05/2026 10:04PM
The incident has been resolved and voice calls from a subset of Twilio Phone Numbers to network subscribers in Switzerland are operating normally.
MONITORING
2 days ago - at 09/05/2026 09:40PM
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.
MONITORING
2 days ago - at 09/05/2026 05:34PM
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.
MONITORING
2 days ago - at 09/05/2026 03:28PM
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.
IDENTIFIED
3 days ago - at 09/05/2026 08:24AM
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.
IDENTIFIED
3 days ago - at 09/05/2026 04:18AM
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.
IDENTIFIED
3 days ago - at 09/05/2026 02:18AM
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.
IDENTIFIED
3 days ago - at 09/05/2026 01:18AM
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.
INVESTIGATING
3 days ago - at 09/04/2026 11:56PM
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.
INVESTIGATING
3 days ago - at 09/04/2026 11:18PM
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.
INVESTIGATING
3 days ago - at 09/04/2026 09:55PM
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.
INVESTIGATING
3 days ago - at 09/04/2026 08:55PM
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.
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