SMS Delivery Failures and Delays to Cingular Wireless AT&T in the US Over a Subset of Longcodes

Resolved

Twilio SMS was degraded for 6 minutes between 12:25 and 12:31 Pacific Time on 04/09/2025. During this period of time customers may have experienced SMS delivery failures and delays to Cingular Wireless AT&T in the US Over a subset of longcodes. The issue has now been resolved.