SMS Delivery Delays and Failures from a Subset of Twilio Alphanumeric Sender IDs to Multiple Networks in United Kingdom

Incident Report for Twilio

Resolved

The incident has been resolved and SMS delivery from a subset of Twilio Alphanumeric Sender IDs to network subscribers on affected networks in the United Kingdom is operating normally.
Posted Jun 09, 2026 - 00:30 PDT

Monitoring

We have observed a recovery in SMS delivery from a subset of Twilio Alphanumeric Sender IDs to network subscribers on multiple networks 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.
Posted Jun 08, 2026 - 22:28 PDT

Update

Twilio customers may be experiencing SMS delivery delays and failures from a subset of Twilio Alphanumeric Sender IDs to network subscribers on multiple networks in the United Kingdom. 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.
Posted Jun 08, 2026 - 20:25 PDT

Update

Twilio customers may be experiencing SMS delivery delays and failures from a subset of Twilio Alphanumeric Sender IDs to network subscribers on multiple networks in the United Kingdom. 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.
Posted Jun 08, 2026 - 16:12 PDT

Update

Twilio customers may be experiencing SMS delivery delays and failures from a subset of Twilio Alphanumeric Sender IDs to network subscribers on multiple networks in the United Kingdom. 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.
Posted Jun 08, 2026 - 14:12 PDT

Identified

Twilio customers may be experiencing SMS delivery delays and failures from a subset of Twilio Alphanumeric Sender IDs to network subscribers on multiple networks in the United Kingdom. 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.
Posted Jun 08, 2026 - 13:12 PDT

Investigating

Twilio customers may be experiencing SMS delivery delays and failures from a subset of Twilio Alphanumeric Sender IDs to network subscribers on multiple networks 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.
Posted Jun 08, 2026 - 13:11 PDT
This incident affected: CARRIER NETWORK (SMS, Europe).