Twilio incident
Voice Call Failures Between a Subset of Twilio Phone Numbers and Multiple Networks in Japan
Twilio experienced a minor incident on August 21, 2026 affecting Voice, APAC, lasting 2h 55m. The incident has been resolved; the full update timeline is below.
Affected components
Update timeline
- identified Aug 21, 2026, 07:09 AM UTC
Twilio customers may be experiencing voice call failures between a subset of Twilio Phone Numbers and network subscribers on multiple networks in Japan. 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.
- monitoring Aug 21, 2026, 07:57 AM UTC
We have observed a recovery in voice call failures between a subset of Twilio Phone Numbers and network subscribers on multiple networks in Japan and are monitoring service stability. We will provide another update in 2 hours or as soon as more information becomes available.
- resolved Aug 21, 2026, 10:04 AM UTC
The incident has been resolved and voice calls between a subset of Twilio Phone Numbers and network subscribers on affected networks in Japan are operating normally.