Major incident

Telnyx: Delayed delivery of 10DLC SMS messages to AT&T destinations

Current status of Telnyx: Under maintenance — live Telnyx status

Timeline

1. Oct 6, 2026, 17:38 UTC
   investigating
   We are investigating delays in the delivery of SMS messages sent over 10DLC long code numbers to AT&T subscribers, beginning October 6 at around 15:00 UTC. Messages are being accepted but may be delivered later than expected to AT&T handsets. Messages to other carriers are not affected. Our team is working with our downstream partner and AT&T to identify the cause and restore normal processing. We will provide further updates as more information becomes available.
2. Oct 7, 2026, 13:03 UTC
   monitoring
   Message processing has returned to normal, and all queued messages have been delivered. SMS messages sent over 10DLC long code numbers to AT&T subscribers are now being delivered without delay. We are continuing to monitor traffic closely while our downstream partner and AT&T complete their investigation into the root cause. We will post a final update once the incident is resolved.
3. Oct 7, 2026, 19:30 UTC
   resolved
   Message processing has returned to normal, and all queued messages have been delivered. SMS messages sent over 10DLC long code numbers to AT&T subscribers continue being delivered without delay after monitoring period.

Updates as published by Telnyx.