SendGrid incident: Voice Call Failures from a Subset of Twilio Mobile Numbers to Vodafone United Kingdom

Affected components

• Voice, Europe

1. resolvedSep 29, 2026, 03:38 UTC

   The incident has been resolved and voice calls from a subset of Twilio Mobile Numbers to Vodafone network subscribers in the United Kingdom are operating normally.

2. monitoringSep 28, 2026, 23:36 UTC

   We have observed a recovery in voice calls from a subset of Twilio Mobile Numbers to Vodafone network subscribers in the United Kingdom and are monitoring service stability. We will provide another update in 4 hours or as soon as more information becomes available.

3. monitoringSep 28, 2026, 21:30 UTC

   We have observed a recovery in voice calls from a subset of Twilio Mobile Numbers to Vodafone network subscribers in the United Kingdom and are monitoring service stability. We will provide another update in 2 hours or as soon as more information becomes available.

4. investigatingSep 28, 2026, 17:56 UTC

   Twilio customers may be experiencing voice call failures from a subset of Twilio Phone Numbers to Vodafone network subscribers in the United Kingdom. Our team is actively investigating this issue. We will provide another update in 8 hours or as soon as more information becomes available.

5. investigatingSep 28, 2026, 13:50 UTC

   Twilio customers may be experiencing voice call failures from a subset of Twilio Mobile Numbers to Vodafone network subscribers in the United Kingdom. Our team is actively investigating this issue. We will provide another update in 4 hours or as soon as more information becomes available.

6. investigatingSep 28, 2026, 11:48 UTC

   Twilio customers may be experiencing voice call failures from a subset of Twilio Mobile Numbers to Vodafone network subscribers in the United Kingdom. Our team is actively investigating this issue. We will provide another update in 2 hours or as soon as more information becomes available.

7. investigatingSep 28, 2026, 10:45 UTC

   Twilio customers may be experiencing voice call failures from a subset of Twilio Phone Numbers to Vodafone network subscribers in the United Kingdom. Our team is actively investigating this issue. We will provide another update in 1 hour or as soon as more information becomes available.

What APIStatus.watch saw

Our 5-minute checks didn't record a change in SendGrid's overall status around this incident. Smaller or regional incidents often leave a provider's overall status green.

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