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minor✓ Resolved

SMS Delivery Report Delays from a Subset of Twilio Long Codes and Toll-Free Numbers to AT&T United States

Twilio•Mon, May 11, 2026, 01:05 PM
Status
resolved
Duration
11h 59m
Updates
8
Coverage
0 articles

INCIDENT TIMELINE

✓ ResolvedTue, May 12, 2026, 01:05 AM
This incident has been resolved.
monitoringMon, May 11, 2026, 10:53 PM
We have observed a recovery in SMS delivery from a subset of Twilio Long Codes and Toll-Free Numbers to AT&T network subscribers in the United States and are monitoring service stability. We will provide another update in 2 hours or as soon as more information becomes available.
identifiedMon, May 11, 2026, 07:23 PM
Twilio customers may be experiencing SMS delivery report delays from a subset of Twilio Long Codes and Toll-Free Numbers to AT&T network subscribers in the United States. 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.
identifiedMon, May 11, 2026, 05:22 PM
Twilio customers may be experiencing SMS delivery report delays from a subset of Twilio Long Codes and Toll-Free Numbers to AT&T network subscribers in the United States. 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.
identifiedMon, May 11, 2026, 04:21 PM
Twilio customers may be experiencing SMS delivery report delays from a subset of Twilio Long Codes and Toll-Free Numbers to AT&T network subscribers in the United States. 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.
investigatingMon, May 11, 2026, 04:16 PM
Twilio customers may be experiencing SMS delivery report delays from Twilio Long Codes to AT&T network subscribers in the United States. Our team is actively investigating this issue. We will provide another update in 4 hours or as soon as more information becomes available.
investigatingMon, May 11, 2026, 03:22 PM
We are continuing to investigate this issue.
investigatingMon, May 11, 2026, 02:14 PM
Twilio customers may be experiencing SMS delivery delays from Twilio Long Codes to AT&T network subscribers in the United States. Our team is actively investigating this issue. We will provide another update in 2 hours or as soon as more information becomes available.
investigatingMon, May 11, 2026, 01:05 PM
Twilio customers may be experiencing SMS delivery delays from Twilio Long Codes to AT&T network subscribers in the United States. Our team is actively investigating this issue. We will provide another update in 1 hour or as soon as more information becomes available.

📊 TECHNICAL DETAILS

Internal ID
f49646e9-bc66-402e-99ce-e1a0c014e4c5
External ID
08m0h8m4lbtp
🕐 Started
Mon, May 11, 2026, 01:05 PM
🔄 Last Updated
Tue, May 12, 2026, 01:05 AM
✓ Resolved
Tue, May 12, 2026, 01:05 AM
MINOR
Impact Level
11h 59m
Total Duration
8
Status Updates
Affected Components
SMS Long Code, North AmericaSMS Long Code, North AmericaSMS Toll-Free, North AmericaSMS Toll-Free, North America
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