SMS delivery delays to AT&T in the US from a subset of Shortcodes

Resolved

We are no longer experiencing SMS delivery delays when sending messages to AT&T in the US from a subset of Shortcodes. This incident has been resolved.

Update

We are observing recovery in SMS delivery delays when sending messages to AT&T in the US from a subset of Shortcodes. We will continue monitoring the service to ensure a full recovery. We will provide another update in 2 hours or as soon as more information becomes available.

Investigating

We are experiencing SMS delivery delays when sending messages to AT&T in the US from a subset of Shortcodes. 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.