Outage in Twilio

[SNOC] SMS Delivery Delays to AT&T Network in the United States via Subset of Long Codes and Short Codes

Resolved Minor

December 11, 2025 - Started 4 months ago - Lasted about 5 hours
Official incident page

Incident Report

We are experiencing SMS Delivery Delays when sending messages to AT&T Network in the United States via Subset of Long Codes and Short Codes. Our engineers are working with our carrier partner to resolve the issue. We will provide another update in 1 hour or as soon as more information becomes available.

Components affected

Twilio SMS Short Code, North America Twilio SMS Long Code, North America

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Latest Updates ( sorted recent to last )

RESOLVED 4 months ago - at 12/11/2025 01:28PM

This incident has been resolved.

MONITORING 4 months ago - at 12/11/2025 11:19AM

We are observing recovery of SMS Delivery Delays when sending messages to AT&T Network in the United States via Subset of Long Codes and Short Codes. Our engineers are continuing to monitor the issue to ensure it is resolved. We will provide another update in 2 hours or as soon as more information becomes available.

INVESTIGATING 4 months ago - at 12/11/2025 09:21AM

We are continuing to experience SMS Delivery Delays when sending messages to AT&T Network in the United States via Subset of Long Codes and Short Codes. Our engineers are working with our carrier partner to resolve the issue. We will provide another update in 2 hours or as soon as more information becomes available.

INVESTIGATING 4 months ago - at 12/11/2025 08:21AM

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