Production monitoring of the new short code number (see below) has proven successful. Accordingly, we are moving this incident to resolved. Please see below for additional details:
. . .
In response to the isolated SMS notification challenges we were encountering on the AT&T Network, we have provisioned a new short code number. This new short code number should allow for SMS notifications to reach those AT&T end-users that were previously encountering notification challenges.
For reference, the new short code number is: 842867
If you are continuing to encounter SMS notification challenges, please reach out to VictorOps Support team at:firstname.lastname@example.org
Once again, we apologize for any inconvenience this issue may have caused.