Voice Call Failures Between a Subset of Twilio Phone Numbers and Multiple Networks in Japan

resolved · 21 Aug 2026, 11:05

Auto-resolved by the status page: the vendor stopped reporting this incident in their feed.

monitoring · 21 Aug 2026, 08:58

**2026-08-21T07:09:05.047Z** — 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. **2026-08-21T07:57:25.739Z** — 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.

identified · 21 Aug 2026, 08:10

**2026-08-21T07:09:05.047Z** — 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.