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

- Impact (vendor’s label): major
- Status: resolved
- Started: 2026-10-06 17:38 UTC · Resolved: 2026-10-07 19:30 UTC · Duration: 26 h
- Updates: 3 · Affected components: NORAM
- [Vendor status page: https://status.telnyx.com/incidents/01M494R618XA43M57FD9HH3SSG](https://status.telnyx.com/incidents/01M494R618XA43M57FD9HH3SSG)
- [Company: Telnyx](https://rewindex.com/company/telnyx.md)

## Timeline of updates

- **investigating** 2026-10-06 17:38 UTC: 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.
- **monitoring** 2026-10-07 13:03 UTC: 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.
- **resolved** 2026-10-07 19:30 UTC: 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.

## Rewindex changes for this incident

- 2026-10-06 17:38 UTC: [Major incident: Delayed delivery of 10DLC SMS messages to AT&T destinations](https://rewindex.com/change/i6f89f819fceb29.md)


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Canonical: https://rewindex.com/company/telnyx/incidents/01M494R618XA43M57FD9HH3SSG · Markdown: https://rewindex.com/company/telnyx/incidents/01M494R618XA43M57FD9HH3SSG.md · JSON: https://rewindex.com/api/v1/companies/telnyx/incidents/01M494R618XA43M57FD9HH3SSG · Generated 2026-10-19T21:08:41.723Z