SMS Delivery Failures to AT&T Network in Mexico for a Subset of Twilio Short Codes

Resolved

We have fully investigated the SMS Delivery Failures to AT&T Network in Mexico for a Subset of Twilio Short Codes issue, and it was determined that the impact was limited to a small set of customers, who have been contacted individually to address any concerns. All systems are operational.

Investigating

We are experiencing SMS delivery failures to AT&T network in Mexico for a subset of Twilio short codes. Our engineers are working with our carrier partner to resolve the issue. We expect to provide another update in 1 hour or as soon as more information becomes available.