System Update: September 10, 2026
Subject: AT&T Messaging Delivery Incident on TFNs and 10-DLCs
Our upstream partners reported an intermittent issue occurring today with messages sent through the AT&T network on Bandwidth TFNs and 10-DLCs. Some messages sent on this network are inaccurately failing due to "Invalid Source Address." Teams are working to restore expected delivery of messages. We will continue to provide updates through resolution.
Please contact support if you have questions or concerns.
-- UPDATE -- 9/10/2026 4:24pm PT
Upstream teams continue working towards restoring expected delivery of messages. We will continue to provide updates through resolution.
Please contact support if you have questions or concerns.
-- UPDATE -- 9/11/2026 6:18am PT
Upstream teams continue working towards restoring expected delivery of messages. We will continue to provide updates as they become available.
Please contact support if you have questions or concerns.
-- RESOLVED -- 9/11/2026 11:20am PT
Upstream teams have resolved this issue and messages should deliver as expected now.
Please contact support if you have any questions or concerns.