# Voice Call Failures from a Subset of Twilio Mobile Numbers to Vodafone United Kingdom

- Provider: [Twilio](https://down.guide/twilio)
- Level: confirmed
- Impact: Degraded
- lasted 16h 54m
- started 2026-09-28 10:45 UTC
- Voice, Europe
- eu
- id: DWN-1d93c4f4b7
- Official page: https://stspg.io/lq30p10jhlfn

## Updates from Twilio
### 2026-09-28 10:45 UTC: investigating
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.

### 2026-09-28 11:48 UTC: investigating
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.

### 2026-09-28 13:50 UTC: investigating
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.

### 2026-09-28 17:56 UTC: investigating
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.

### 2026-09-28 21:30 UTC: monitoring
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.

### 2026-09-28 23:36 UTC: monitoring
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.

### 2026-09-29 03:38 UTC: resolved
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.

From the builder: does your app depend on Twilio? [Sazabi](https://www.sazabi.com/?utm_source=down-guide&utm_medium=markdown&utm_content=twilio) detects problems in your own logs without hand-written monitors, and you can ask it in plain language which errors mention Twilio.

---
down.guide reads providers' official status pages every minute and adds its own evidence, always labeled. Free, no account. Agents: MCP at https://down.guide/mcp, REST at https://down.guide/api/v1, feeds at https://down.guide/feed. Built by [Sazabi](https://www.sazabi.com/?utm_source=down-guide&utm_medium=markdown&utm_content=DWN-1d93c4f4b7), AI-native observability and security: automatic issue detection, plain-language log search and live dashboards.