Outage in Quad9

Chicago (ORD) - Service Degredation

Resolved Minor

December 17, 2025 - Started about 2 months ago - Lasted about 5 hours
Official incident page

Incident Report

We have experienced hardware failure on 1 of our core servers in Chicago (ORD). As a result, there may be elevated timeouts or DNS retries. We are in the process of deploying 2 core servers; one to replace the failed server, and one to add additional capacity to improve redundancy. We are aiming to bring up the 2 new core servers within 24 hours. Issue Start: 15:05 UTC, December 17

Components affected

Quad9 Current Status

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Latest Updates ( sorted recent to last )

RESOLVED about 2 months ago - at 12/17/2025 08:09PM

We have deployed the aforementioned replacement and additional core servers in Chicago (ORD), and should be at full performance, with additional capacity and redundancy.

We apologize for any inconvenience.

Issue Start: 15:05 UTC, December 17
Issue Stop: 19:50 UTC, December 17

INVESTIGATING about 2 months ago - at 12/17/2025 03:20PM

We have experienced hardware failure on 1 of our core servers in Chicago (ORD). As a result, there may be elevated timeouts or DNS retries.

We are in the process of deploying 2 core servers; one to replace the failed server, and one to add additional capacity to improve redundancy.

We are aiming to bring up the 2 new core servers within 24 hours.

Issue Start: 15:05 UTC, December 17

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