Event Monitor Cyber
EM-20261113-84L0 OutageInfo severity

AT&T: Messaging Delivery Problems

Nov 13, 2026 · Carrier · reported by Sinch, Bandwidth

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Providers' own notes put the impact at 08:45–09:24 UTC on Nov 13, 20:45 UTC on Nov 11–19:00 UTC on Nov 12.

Status
Resolved

Since : every provider marked it resolved.

First Signal
Nov 13 07:42 UTCT20 Sinch status
Page Born
Nov 13 09:15 UTCsecond source joined
Last Signal
Nov 13 09:15 UTC6 hours before snapshot
Sources
22 official · 0 research, news or crowd
Lasted
2 hoursfirst signal to resolved

Life Of This Page

  1. 1
    Born
    A second, independent provider or measurement sees it.
  2. 2
    Developing
    Reports and measurements join.
  3. 3
    Confirmed
    A provider status page acknowledges it.
  4. 4
    Resolved · Now
    Every provider marks it resolved and 6 hours pass quietly, or 24 hours pass with no new signal.
  5. 5
    Archived
    Not yet
    30 days after resolved. Read only; the link keeps working. Reopens if it comes back.

The ID never changes, and earlier addresses keep working. A correction is logged, never overwritten. If two pages turn out to be one incident, the later one points to the earlier.

Outage Lifecycle

  1. First Report: reached
    Nov 13 07:42 UTC
    T20 Sinch status
  2. Corroborated: reached
    Nov 13 09:15 UTC
    2 independent sources
  3. Acknowledged: reached
    Nov 13 07:42 UTC
    T20 status page
  4. Network Check: not yet
    Not yet
    No network data for this provider
  5. Restored: reached
    Nov 13 09:15 UTC
    All status incidents resolved

Timeline

06:0012:0018:00BornResolvedT20 Sinch statusT18 Bandwidth statusCrowd posts

Point at a mark to read it. Squares are signals, colored by severity; every one is also listed under Signals.

Signals

  1. Bandwidth: Intermittent Call Failures (opens source in a new tab) postmortem. Between 20:45 UTC on November 11 and 19:00 UTC on November 12, a subset of outbound voice calls to certain destinations routed through one AT&T connection were not completed. Bandwidth is continuing to… Info severityProvider StatusT18 Bandwidth status
  2. Sinch: Post-Incident Notification - Mexico - Telefonica and AT&T (opens source in a new tab) resolved. We experienced an issue causing degradation in Mexico - Telefonica and AT&T Incident Start Time: 2026-11-13 08:45 UTC Incident End Time : 2026-11-13 09:24 UTC Impact: Delayed MT's/Delayed MO's/Missing… Info severityProvider StatusT20 Sinch status

Crowd Posts At The Time

  1. AT&T: Possible problems (Outage.Report) (opens source in a new tab) High severityCrowdT48 Outage.Report (carrier status)
  2. AT&T: Problems detected (crowd reports) (opens source in a new tab) 3 user reports in the last 2 hours against a baseline of 6. High severityCrowdT49 istheservicedown (carrier report curves)
  3. AT&T: Possible problems (Outage.Report) (opens source in a new tab) High severityCrowdT48 Outage.Report (carrier status)
  4. AT&T: Possible problems (Outage.Report) (opens source in a new tab) High severityCrowdT48 Outage.Report (carrier status)
  5. AT&T is reportedly down for some subscribers right now. Are you one of them? #ATT #ATTDown statusisdown.com/service/at_a... (opens source in a new tab) Info severityCrowdT57 Bluesky search ("outage" + carrier)
  6. AT&T: Possible problems (Outage.Report) (opens source in a new tab) High severityCrowdT48 Outage.Report (carrier status)
  7. AT&T: Possible problems (Outage.Report) (opens source in a new tab) High severityCrowdT48 Outage.Report (carrier status)
  8. AT&T: Possible problems (Outage.Report) (opens source in a new tab) High severityCrowdT48 Outage.Report (carrier status)

Public posts naming AT&T within 6 hours of the incident. Shown for context; they do not change the status.