US SMS delivery delays and failures

Update timeline

1. investigating Aug 06, 2025, 04:40 AM UTC

   We have identified an issue causing SMS delivery delays and failures in the US. We are waiting for AT&T to fix the issues on their end. During this time, please use alternate authentication methods such as Duo Push, Duo Mobile Passcodes, Hardware Tokens etc to login to your Duo-protected integrations.

2. investigating Aug 06, 2025, 04:49 AM UTC

   [Comment from Opsgenie]System noted: "Statuspage incident impact [MINOR] has changed as [MAJOR]. Statuspage incident status [INVESTIGATING] has changed as [IDENTIFIED]. Statuspage incident message [We have identified an issue causing SMS delivery delays and failures in the US. We are waiting for AT&T to fix the issues on their end. During this time, please use alternate authentication methods such as Duo Push, Duo Mobile Passcodes, Hardware Tokens etc to login to your Duo-protected integrations.] has changed as [The issue has been identified and a fix is being implemented.]. Statuspage incident component [SMS Message Delivery] status [degraded_performance] has changed as [partial_outage]. " on alert: "US SMS delivery delays and failures"

3. investigating Aug 06, 2025, 08:06 AM UTC

   [Comment from Opsgenie]System noted: "Statuspage incident status [IDENTIFIED] has changed as [RESOLVED]. Statuspage incident message [The issue has been identified and a fix is being implemented.] has changed as [The issue affecting SMS delivery to US phone numbers has been resolved. Services are now fully operational.]. Statuspage incident component [SMS Message Delivery] status [partial_outage] has changed as [operational]. Statuspage incident component [SMS Message Delivery] status [partial_outage] has changed as [operational]. Statuspage incident component [SMS Message Delivery] status [partial_outage] has changed as [operational]. Statuspage incident component [SMS Message Delivery] status [partial_outage] has changed as [operational]. Statuspage incident component [SMS Message Delivery] status [partial_outage] has changed as [operational]. Statuspage incident component [SMS Message Delivery] status [partial_outage] has changed as [operational]. Statuspage incident component [SMS Message Delivery] status [partial_outage] has changed as [operational]. Statuspage incident component [SMS Message Delivery] status [partial_outage] has changed as [operational]. Statuspage incident component [SMS Message Delivery] status [partial_outage] has changed as [operational]. Statuspage incident component [SMS Message Delivery] status [partial_outage] has changed as [operational]. Statuspage incident component [SMS Message Delivery] status [partial_outage] has changed as [operational]. Statuspage incident component [SMS Message Delivery] status [partial_outage] has changed as [operational]. Statuspage incident component [SMS Message Delivery] status [partial_outage] has changed as [operational]. Statuspage incident component [SMS Message Delivery] status [partial_outage] has changed as [operational]. Statuspage incident component [SMS Message Delivery] status [partial_outage] has changed as [operational]. Statuspage incident component [SMS Message Delivery] status [partial_outage] has changed as [operational]. Statuspage incident component [SMS Message Delivery] status [partial_outage] has changed as [operational]. Statuspage incident component [SMS Message Delivery] status [partial_outage] has changed as [operational]. Statuspage incident component [SMS Message Delivery] status [partial_outage] has changed as [operational]. Statuspage incident component [SMS Message Delivery] status [partial_outage] has changed as [operational]. Statuspage incident component [SMS Message Delivery] status [partial_outage] has changed as [operational]. Statuspage incident component [SMS Message Delivery] status [partial_outage] has changed as [operational]. Statuspage incident component [SMS Message Delivery] status [partial_outage] has changed as [operational]. Statuspage incident component [SMS Message Delivery] status [partial_outage] has changed as [operational]. Statuspage incident component [SMS Message Delivery] status [partial_outage] has changed as [operational]. Statuspage incident component [SMS Message Delivery] status [partial_outage] has changed as [operational]. Statuspage incident component [SMS Message Delivery] status [partial_outage] has changed as [operational]. Statuspage incident component [SMS Message Delivery] status [partial_outage] has changed as [operational]. Statuspage incident component [SMS Message Delivery] status [partial_outage] has changed as [operational]. Statuspage incident component [SMS Message Delivery] status [partial_outage] has changed as [operational]. Statuspage incident component [SMS Message Delivery] status [partial_outage] has changed as [operational]. Statuspage incident component [SMS Message Delivery] status [partial_outage] has changed as [operational]. Statuspage incident component [SMS Message Delivery] status [partial_outage] has changed as [operational]. Statuspage incident component [SMS Message Delivery] status [partial_outage] has changed as [operational]. Statuspage incident component [SMS Message Delivery] status [partial_outage] has changed as [operational]. Statuspage incident component [SMS Message Delivery] status [partial_outage] has changed as [operational]. Statuspage incident component [SMS Message Delivery] status [partial_outage] has changed as [operational]. Statuspage incident component [SMS Message Delivery] status [partial_outage] has changed as [operational]. Statuspage incident component [SMS Message Delivery] status [partial_outage] has changed as [operational]. Statuspage incident component [SMS Message Delivery] status [partial_outage] has changed as [operational]. Statuspage incident component [SMS Message Delivery] status [partial_outage] has changed as [operational]. Statuspage incident component [SMS Message Delivery] status [partial_outage] has changed as [operational]. Statuspage incident component [SMS Message Delivery] status [partial_outage] has changed as [operational]. Statuspage incident component [SMS Message Delivery] status [partial_outage] has changed as [operational]. Statuspage incident component [SMS Message Delivery] status [partial_outage] has changed as [operational]. Statuspage incident component [SMS Message Delivery] status [partial_outage] has changed as [operational]. Statuspage incident component [SMS Message Delivery] status [partial_outage] has changed as [operational]. Statuspage incident component [SMS Message Delivery] status [partial_outage] has changed as [operational]. Statuspage incident component [SMS Message Delivery] status [partial_outage] has changed as [operational]. Statuspage incident component [SMS Message Delivery] status [partial_outage] has changed as [operational]. Statuspage incident component [SMS Message Delivery] status [partial_outage] has changed as [operational]. Statuspage incident component [SMS Message Delivery] status [partial_outage] has changed as [operational]. Statuspage incident component [SMS Message Delivery] status [partial_outage] has changed as [operational]. Statuspage incident component [SMS Message Delivery] status [partial_outage] has changed as [operational]. Statuspage incident component [SMS Message Delivery] status [partial_outage] has changed as [operational]. Statuspage incident component [SMS Message Delivery] status [partial_outage] has changed as [operational]. Statuspage incident component [SMS Message Delivery] status [partial_outage] has changed as [operational]. Statuspage incident component [SMS Message Delivery] status [partial_outage] has changed as [operational]. Statuspage incident component [SMS Message Delivery] status [partial_outage] has changed as [operational]. Statuspage incident component [SMS Message Delivery] status [partial_outage] has changed as [operational]. Statuspage incident component [SMS Message Delivery] status [partial_outage] has changed as [operational]. Statuspage incident component [SMS Message Delivery] status [partial_outage] has changed as [operational]. Statuspage incident component [SMS Message Delivery] status [partial_outage] has changed as [operational]. " on alert: "US SMS delivery delays and failures"

4. investigating Aug 06, 2025, 08:09 AM UTC

   [Comment from Opsgenie]System noted: "Statuspage incident impact [MAJOR] has changed as [NONE]. " on alert: "US SMS delivery delays and failures"

5. investigating Aug 06, 2025, 08:09 AM UTC

   [Comment from Opsgenie]System noted: "Statuspage incident impact [NONE] has changed as [MAJOR]. " on alert: "US SMS delivery delays and failures"

6. resolved Aug 06, 2025, 10:09 AM UTC

   This incident has been resolved.