Delivery Issue AT&T US

Incident Report for Sinch

Resolved

We are no longer observing delivery issues towards AT&T US.

Impact: Clients may have observed a delay in SMS and MMS short code MT messages and DLRs towards AT&T US.

Impact Time-slot #1

Incident Start Time: 2019-12-17 21:00 UTC.
Incident End Time: 2019-12-18 01:44 UTC.

Impact Time-slot #2

Incident Start Time: 2019-12-18 10:00 UTC.
Incident End Time: 2019-12-18 12:20 UTC.

If you have any further questions or concerns please contact support@sinch.com

Posted Dec 18, 2019 - 12:37 UTC

Identified

We are once again observing MT delivery issues towards AT&T US.

Impact AT&T: Clients may observe a delay in SMS and MMS short code MT messages and DLRs.

Posted Dec 18, 2019 - 10:34 UTC

Monitoring

We are no longer observing delivery issues to AT&T US, the situation is being monitored.

Impact: Clients may have observed a delay in SMS and MMS short code MT messages and DLRs towards AT&T US.

We are currently monitoring the situation and resolve notice will be sent once the situation is deemed resolved.

Posted Dec 18, 2019 - 03:41 UTC

Investigating

We are observing MT delivery issues towards AT&T US.

Impact AT&T: Clients may have observed a delay in SMS and MMS short code MT messages and DLRs.

Outage Start time: 2019-12-17 21:00 UTC

Posted Dec 18, 2019 - 00:03 UTC

This incident affected: External Connectivity (SMS - US - ShortCode) and Messaging APIs (MMS - US).