{"id":"EM-20261112-H38X","url":"https://cyber.eventmonitor.net/incident/EM-20261112-H38X/att-messaging-delivery-problems/","type":"outage","title":"AT&T: Messaging Delivery Problems","subtitle":"Nov 12, 2026 · Carrier · reported by Sinch, Vonage, Twilio, Bandwidth","subject":"AT&T","status":"Confirmed","severity":"medium","affected":[],"headline":null,"born":"2026-11-12T01:14:51.499Z","firstSignal":"2026-11-12T00:33:54.555Z","lastSignal":"2026-11-12T01:32:09.230Z","updated":"2026-11-12T01:32:59.730Z","revision":2,"life":[{"status":"Born","at":"2026-11-12T01:14:51.499Z","why":"second independent source: T21 Vonage status"},{"status":"Developing","at":"2026-11-12T01:14:51.499Z","why":"signals keep joining"},{"status":"Confirmed","at":"2026-11-12T01:14:51.499Z","why":"4 provider status pages acknowledged it"}],"changeLog":[{"at":"2026-11-12T00:33:54.555Z","what":"First signal: T20 Sinch status"},{"at":"2026-11-12T01:14:51.499Z","what":"Born: second source, T21 Vonage status. Page EM-20261112-H38X created."},{"at":"2026-11-12T01:14:51.499Z","what":"Status: Confirmed (4 provider status pages acknowledged it)"},{"at":"2026-11-12T01:17:56.738Z","what":"Source joined: T17 Twilio status"},{"at":"2026-11-12T01:32:09.230Z","what":"Source joined: T18 Bandwidth status"}],"stages":[{"name":"First Report","at":"2026-11-12T00:33:54.555Z","detail":"T20 Sinch status"},{"name":"Corroborated","at":"2026-11-12T01:14:51.499Z","detail":"4 independent sources"},{"name":"Acknowledged","at":"2026-11-12T00:33:54.555Z","detail":"T20 status page"},{"name":"Network Check","at":null,"detail":"No network data for this provider"},{"name":"Restored","at":null,"detail":"Still open"}],"signals":[{"at":"2026-11-12T00:33:54.555Z","source":"T20","sourceName":"Sinch status","role":"Provider Status","severity":2,"title":"Sinch: Delivery Issue - United States - AT&T","text":"investigating. We are currently observing delivery issues in United States - AT&T Incident Start Time: 2026-11-12 00:00 UTC Impact: Failed MT's/Delayed MT's/Missing delivery receipts/Late delivery receipts We will update as soon as we have more information. If you have any…","url":"https://stspg.io/p08dtzzzp4nn"},{"at":"2026-11-12T01:14:51.499Z","source":"T21","sourceName":"Vonage status","role":"Provider Status","severity":2,"title":"Vonage: USA SMS - Delivery degradation affecting 10DLC traffic towards AT&T operator","text":"investigating. Please be advised that we are observing SMS delivery degradation for 10dlc towards AT&T operator in USA.. We are working towards resolution of the issue and will issue an update as soon as more information becomes available. If you have any questions, please…","url":"https://stspg.io/cpd1c1d7f730"},{"at":"2026-11-12T01:17:56.738Z","source":"T17","sourceName":"Twilio status","role":"Provider Status","severity":2,"title":"Twilio: SMS Delivery Failures From Long Code Numbers to AT&T in the US","text":"investigating. We are experiencing SMS Delivery Failures From Long Code Numbers to AT&T in the US. Our engineers are working with our carrier partner to resolve the issue. We expect to provide another update in 1 hour or as soon as more information becomes available.","url":"https://stspg.io/qcyjvqtw8lr0"},{"at":"2026-11-12T01:32:09.230Z","source":"T18","sourceName":"Bandwidth status","role":"Provider Status","severity":2,"title":"Bandwidth: AT&T SMS Delays","text":"investigating. Bandwidth teams are investigating delays to outbound SMS messages to AT&T destinations.","url":"https://stspg.io/f8h1d9q7fhnz"}],"crowd":[],"reference":{},"mergedInto":null,"publisher":"Event Monitor Cyber"}