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.    

System Updates URL https://urlme.us/C4E6E 

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