Outage in Zipwhip

MMS Delivery Delays to Cingular Wireless (AT&T) in United States of America via a Subset of Longcodes

Resolved Minor
October 28, 2025 - Started about 17 hours ago - Lasted about 3 hours
Official incident page

Incident Report

We are experiencing MMS delivery delays when sending messages to Cingular Wireless (AT&T) in United States of America via a subset of longcodes. Our engineers are working with our carrier partner to resolve the issue. We will provide another update in 1 hour or as soon as more information becomes available.

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Latest Updates ( sorted recent to last )
RESOLVED about 13 hours ago - at 10/28/2025 08:56PM

We are no longer experiencing MMS/SMS delivery delays when sending messages to Cingular Wireless (AT&T) in United States of America via a subset of longcodes. This incident has been resolved.

MONITORING about 15 hours ago - at 10/28/2025 07:15PM

We are observing successful MMS delivery delays when sending messages to Cingular Wireless (AT&T) in United States of America via a subset of longcodes. We will continue to monitor to ensure full service recovery. We expect to provide another update in 2 hours or as soon as more information becomes available.

INVESTIGATING about 16 hours ago - at 10/28/2025 06:52PM

We continue to experience MMS delivery delays when sending messages to Cingular Wireless (AT&T) in the United States of America via a subset of longcodes. Our engineers are working with our carrier partner to resolve the issue. We will provide another update in 2 hours or as soon as more information becomes available.

INVESTIGATING about 17 hours ago - at 10/28/2025 05:52PM

We are experiencing MMS delivery delays when sending messages to Cingular Wireless (AT&T) in United States of America via a subset of longcodes. Our engineers are working with our carrier partner to resolve the issue. We will provide another update in 1 hour or as soon as more information becomes available.

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