Outage in Duo Security
Duo - Phone call and SMS authentication issues - Australia
Resolved MinorIncident Report
Summary AI Generated
A third-party carrier issue in Australia disrupted Duo's phone call and SMS authentication services for approximately 16 hours, causing delays and failures for Australian users attempting to authenticate via those methods. Other authentication methods such as Push Delivery remained unaffected and served as a workaround during the outage. The carrier resolved the underlying issue, and phone call and SMS authentication returned to normal operation.
We are investigating a third-party carrier issue affecting VoIP and SMS services in the Australia region.
Customers in Australia may experience delays or failures when using phone call or SMS authentication.
Other Duo authentication methods, such as Push Delivery, are not expected to be impacted and can be used as an alternate method of authentication if available.
Our team is monitoring the carrier issue and working with the provider as needed. Updates and additional details will be provided as new information becomes available.
We appreciate your patience and understanding during this time.
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Latest Updates ( sorted recent to last )
RESOLVED
9 days ago - at 07/08/2026 03:01PM
The third-party carrier issue affecting VoIP and SMS services in the Australia region has been resolved.
Phone call and SMS authentication services are operating normally. We appreciate your patience and understanding while we addressed this issue.
MONITORING
10 days ago - at 07/08/2026 01:22AM
The third-party carrier has indicated that the issue affecting VoIP and SMS services in the Australia region has been resolved.
Customers in Australia should see improved delivery for phone call and SMS authentication. Other Duo authentication methods, such as Push Delivery, remain available as alternate authentication methods if configured.
We are continuing to monitor service stability and will provide additional updates when the incident is fully resolved.
INVESTIGATING
10 days ago - at 07/07/2026 11:15PM
We are investigating a third-party carrier issue affecting VoIP and SMS services in the Australia region.
Customers in Australia may experience delays or failures when using phone call or SMS authentication.
Other Duo authentication methods, such as Push Delivery, are not expected to be impacted and can be used as an alternate method of authentication if available.
Our team is monitoring the carrier issue and working with the provider as needed. Updates and additional details will be provided as new information becomes available.
We appreciate your patience and understanding during this time.
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