- Level
- confirmed
- Worst impact
- Degraded
- Components
- Phone Call Delivery, Phone Call Delivery, Phone Call Delivery, Phone Call Delivery, Phone Call Delivery, Phone Call Delivery, Phone Call Delivery, Phone Call Delivery, Phone Call Delivery, Phone Call Delivery, Phone Call Delivery, Phone Call Delivery, Phone Call Delivery, Phone Call Delivery, Phone Call Delivery, Phone Call Delivery, Phone Call Delivery, Phone Call Delivery, Phone Call Delivery, Phone Call Delivery, Phone Call Delivery, Phone Call Delivery, Phone Call Delivery, Phone Call Delivery, Phone Call Delivery, Phone Call Delivery, Phone Call Delivery, Phone Call Delivery, Phone Call Delivery, Phone Call Delivery, Phone Call Delivery, Phone Call Delivery, Phone Call Delivery, Phone Call Delivery, Phone Call Delivery, Phone Call Delivery, Phone Call Delivery, Phone Call Delivery, Phone Call Delivery, Phone Call Delivery, Phone Call Delivery, Phone Call Delivery, Phone Call Delivery, Phone Call Delivery, Phone Call Delivery, Phone Call Delivery, Phone Call Delivery, Phone Call Delivery
- Regions
- us
- Down Index
- 24of 100
What to do
Check whether you use Duo Security Phone Call Delivery, Phone Call Delivery, Phone Call Delivery, Phone Call Delivery and 44 more in us. Check your stack
Paste a package.json, lockfile, Terraform or a list of domains at down.guide/stack to see every provider you depend on.Confirm your retries, queues and scheduled jobs caught up after the 2h 54m it lasted.
Anything that failed between 2026-08-08 21:13 UTC and 2026-08-09 00:07 UTC may need a replay.Subscribe to Duo Security's feed to hear about the next one first. RSS feed
https://down.guide/feed?provider=duo works in Slack (/feed subscribe), Discord feed bots and any RSS reader.
Updates from Duo Security 3
- identified
We have identified an issue causing phone call authentication failures for customers in the United States. This is related to a third-party carrier disruption. We are actively monitoring the carrier issue and working with our provider as needed. Please check back here or subscribe to updates for any changes.
provider
- monitoring
We are seeing recovery for the issue related to a third-party carrier disruption that caused phone call authentication failures for customers in the United States. We are actively monitoring phone call authentication delivery and will provide another update once the issue is fully resolved.
provider
- resolved
Phone call authentication delivery for customers in the United States has returned to normal operation. If customers continue to experience issues, please contact Duo Support.
provider
Reports count in aggregate; nothing about you is shown.
Corrections
None so far.
Something wrong on this page? Report an error or send us a note. Every fix is listed here.
Questions about DWN-e244d1b902
Is Duo Security still down?
No, this incident was resolved 2026-08-09 00:07 UTC. For Duo Security's live state, see https://down.guide/duo.
How long did it last?
2h 54m, from 2026-08-08 21:13 UTC to 2026-08-09 00:07 UTC, by the times Duo Security posted.
What was affected?
Duo Security named Phone Call Delivery, Phone Call Delivery, Phone Call Delivery, Phone Call Delivery and 44 more in us.
What caused it?
Duo Security hasn't published a root cause. If it does, it shows here.
Where does this come from?
Duo Security's official status page, https://status.duo.com, quoted verbatim. down.guide's own probes, reports and social counts are labeled as ours.