Login.gov incident
Partial SMS delivery failures for AT&T customers in the United States
Resolved after 1 hour 31 minutes, affecting Single Sign-On & Identity Proofing (secure.login.gov), on February 13, 2025.
Switching to alternate SMS short codes appears to be effective, and we are no longer seeing elevated error rates. We will continue to monitor the situation.
Affected components
Update timeline
- identified Feb 13, 2025, 08:29 PM UTC
We are currently investigating an elevated error rate for text messages to AT&T customers in the United States. Two factor codes or phone verification codes delivered by SMS may return errors or fail to be delivered. Other two factor authentication mechanisms, such as Authenticator App (TOTP) or backup codes, should be unaffected. The team is working to identify the cause and resolve it. We appreciate your patience in the meantime.
- identified Feb 13, 2025, 09:38 PM UTC
We have identified a potential mitigation. The downstream outage appears to affect only a subset of SMS short codes, so we are switching to different SMS short codes and will monitor the situation.
- monitoring Feb 13, 2025, 09:44 PM UTC
Switching to alternate SMS short codes appears to be effective, and we are no longer seeing elevated error rates. We will continue to monitor the situation.
- resolved Feb 13, 2025, 10:01 PM UTC
This incident has been resolved.
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