Twilio incident

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

Minor Resolved View vendor source →

Twilio experienced a minor incident on September 4, 2026 affecting Voice, North America and Voice, Latin America and 1 more component, lasting 1d 1h. The incident has been resolved; the full update timeline is below.

Started
Sep 04, 2026, 08:55 PM UTC
Resolved
Sep 05, 2026, 10:04 PM UTC
Duration
1d 1h
Detected by Pingoru
Sep 04, 2026, 08:55 PM UTC

Affected components

Voice, North AmericaVoice, Latin AmericaVoice, APACVoice, EuropeVoice, Middle East & Africa

Update timeline

  1. investigating Sep 04, 2026, 08:55 PM UTC

    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.

  2. investigating Sep 04, 2026, 09:55 PM UTC

    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.

  3. investigating Sep 04, 2026, 11:18 PM UTC

    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.

  4. investigating Sep 04, 2026, 11:56 PM UTC

    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.

  5. identified Sep 05, 2026, 01:18 AM UTC

    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.

  6. identified Sep 05, 2026, 02:18 AM UTC

    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.

  7. identified Sep 05, 2026, 04:18 AM UTC

    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.

  8. identified Sep 05, 2026, 08:24 AM UTC

    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.

  9. monitoring Sep 05, 2026, 03:28 PM UTC

    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.

  10. monitoring Sep 05, 2026, 05:34 PM UTC

    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.

  11. monitoring Sep 05, 2026, 09:40 PM UTC

    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.

  12. resolved Sep 05, 2026, 10:04 PM UTC

    The incident has been resolved and voice calls from a subset of Twilio Phone Numbers to network subscribers in Switzerland are operating normally.