Outage in Bandwidth
10DLC MMS Outbound Incident
Resolved MajorIncident Report
Bandwidth teams are investigating an incident impacting outbound MMS 10DLC messages towards AT&T destinations. These messages may fail unexpectedly with a 4360 DLR error. Teams are working with AT&T to restore expected messaging behavior.
Components affected
Bandwidth MMS Messaging (MM4)Need to monitor Bandwidth outages?
One place to monitor all your cloud vendors. Get instant alerts when an outage is detected.
Latest Updates ( sorted recent to last )
RESOLVED
2 days ago - at 10/29/2025 08:50PM
This incident has been resolved.
MONITORING
2 days ago - at 10/29/2025 07:30PM
Teams are observing expected MMS Delivery behavior. We will continue to monitor for prolonged stability.
IDENTIFIED
2 days ago - at 10/29/2025 07:01PM
Bandwidth teams have identified the source of this incident as an off network impairment. We continue to partner with the industry provider to restore expected messaging behavior.
INVESTIGATING
3 days ago - at 10/29/2025 06:27PM
Bandwidth teams are investigating an incident impacting outbound MMS 10DLC messages towards AT&T destinations. These messages may fail unexpectedly with a 4360 DLR error. Teams are working with AT&T to restore expected messaging behavior.
Latest Bandwidth outages
MMS 10DLC Outbound Delivery Delays - T-Mobile - about 13 hours ago
Port In Order Activation Delays - Canada - 1 day ago
MMS 10DLC Delays Incident, Outbound - AT&T - 3 days ago
Outbound Messaging - Long Code Delays, Verizon - 4 days ago
Operator Connect - Microsoft Teams Sync Incident - 8 days ago
The Status Page Aggregator Built for IT Teams
With IsDown, you can monitor all your critical services' official status pages from one centralized dashboard and receive instant alerts the moment an outage is detected. Say goodbye to constantly checking multiple sites for updates and stay ahead of outages with IsDown.
Start free trialNo credit card required · Cancel anytime · 4522 services available
Integrations with
