Resolved after 1 hour 21 minutes, affecting US East, on November 3, 2025.
At approximately 11:27AM ET on November 3, ClearlyIP's NOC team began to receive system alerts indicating excess session activity within its US-East trunking systems. The team's investigation identified unauthenticated INVITE messages being received from unknown IPs as the source of the excess traffic, as well as a customer generating unexpected levels of outbound calls. Steps were taken to mitigate the traffic's impact, including restarting affected services to clear sessions and restore normal status. By approximately 11:55AM ET, the US-East situation was stabilized and session traffic had returned to normal levels. The team has identified a number of improvements and traffic management strategies to help avoid similar incidents which will be implemented in future maintenance events.
Affected components
Update timeline
- investigating Nov 03, 2025, 04:49 PM UTC
We are currently investigating this issue.
- identified Nov 03, 2025, 04:57 PM UTC
The issue has been identified and a fix is being implemented.
- monitoring Nov 03, 2025, 05:29 PM UTC
A fix has been implemented and we are monitoring the results.
- resolved Nov 03, 2025, 06:10 PM UTC
This incident has been resolved.
- postmortem Nov 04, 2025, 05:13 PM UTC
At approximately 11:27AM ET on November 3, ClearlyIP's NOC team began to receive system alerts indicating excess session activity within its US-East trunking systems. The team's investigation identified unauthenticated INVITE messages being received from unknown IPs as the source of the excess traffic, as well as a customer generating unexpected levels of outbound calls. Steps were taken to mitigate the traffic's impact, including restarting affected services to clear sessions and restore normal status. By approximately 11:55AM ET, the US-East situation was stabilized and session traffic had returned to normal levels. The team has identified a number of improvements and traffic management strategies to help avoid similar incidents which will be implemented in future maintenance events.
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