United States MMS Carrier Maintenance - AT&T

Maintenance

September 22, 3:00am

United States MMS Carrier Maintenance - AT&T

Status: closed

Start: September 21, 11:00pm

End: September 22, 3:00am

Duration: 4 hours

Affected Components:

3rd Party Providers Twilio MMS Long Code, North America MMS Short Code, North America MMS Toll-Free

Update

September 21, 11:00pm

The AT&T network in the United States is conducting an emergency maintenance from 21 September 2026 at 20:00 PDT until 22 September 2026 at 00:00 PDT. During the maintenance window, there could be intermittent delays delivering MMS to and from AT&T United States handsets.

We are aware of the short notice and are working with our Carrier Partners to provide earlier notification where possible.

Update

September 21, 11:00pm

Maintenance will begin as scheduled in 60 minutes.

Update

September 21, 11:03pm

Scheduled maintenance is currently in progress. We will provide updates as necessary.

Resolved

September 22, 3:00am

The scheduled maintenance has been completed.