Provider
BandwidthIncident detail
Messaging Delivery Incident- AT&T
Resolved incidentMinor1 affected service
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Timeline
Incident updates
Every update on the official status source, oldest to newest, exactly as it appeared there.
Identified
Bandwidth teams have identified an off-network incident resulting in intermittent messages delivery failures to AT&T destinations. These failures result in a 4740 code. Teams are working with AT&T to restore expected delivery of messages.
Identified
Bandwidth teams continue to partner with the impacted industry provider.
Identified
Bandwidth teams continue to partner with the impacted industry provider. Updates will be provided as they become available.
Resolved
This incident has been resolved.
Resolved
Between 23:00 UTC on September 8th and 15:00 UTC on September 11th, Bandwidth Messaging services experienced intermittent SMS/MMS delivery failures to AT&T destinations.
Bandwidth has concluded its investigation of this issue and details can be found in the following Incident Report: https://www.bandwidth.com/support/en/articles/17229559-20260909-messaging-at-t-4740-error-codes-to-at-t-destinations-nnid-mismatch.
We are grateful you have entrusted Bandwidth as your communication partner and we are sorry if this issue resulted in any disruption to your services.
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