Connectivity Issue - US-ORD

Postmortem

Beginning at approximately 14:23 UTC on October 19, 2026, as part of a planned internal maintenance, we migrated too many of the same routing resources at the same time. This resulted in route instability in certain network segments until the migration completed and routes were adopted and converged at 14:55 UTC on October 19, 2026.

To prevent this issue from reoccurring, we are modifying our maintenance planning process to ensure that critical components are taken offline in a phased manner that doesn’t introduce customer impact.

This summary provides an overview of our current understanding of the incident given the information available. Our investigation is ongoing and any information herein is subject to change.

Timeline

Resolved — 2026-10-19 20:33 UTC

We haven’t observed any additional connectivity issues in our Chicago (US-ORD) data center, and will now consider this incident resolved. If you continue to experience problems, please open a Support ticket for assistance.

Monitoring — 2026-10-19 15:29 UTC

At this time we have been able to correct the issues affecting connectivity in our Chicago (US-ORD) data center. We will be monitoring this to ensure that it remains stable. If you are still experiencing issues, please open a Support ticket for assistance.

Investigating — 2026-10-19 14:49 UTC

Our team has identified an issue affecting connectivity in our Chicago (US-ORD) data center. During this time, users may experience intermittent connection timeouts and errors for all services deployed in this data center. We will share additional updates as we have more information.