Outage in Quad9

Warsaw (qwaw2) - Service Degredation / Bad Certificate

Resolved Minor
July 31, 2025 - Started 3 months ago - Lasted less than a minute
Official incident page

Incident Report

One of our servers pending decommission/removal somehow found its way back online and started announcing. Since the server is under-powered, this caused service degradation. In addition, it was using our previous SSL certificate, which broke DNS over TLS and DNS over HTTPS. We apologize for any inconvenience caused. Issue Start: 16:45 UTC, July 31st Issue Stop: 19:05 UTC, July 31st

Need to monitor Quad9 outages?

One place to monitor all your cloud vendors. Get instant alerts when an outage is detected.

Start Free Trial
Latest Updates ( sorted recent to last )
RESOLVED 3 months ago - at 07/31/2025 07:47PM

One of our servers pending decommission/removal somehow found its way back online and started announcing. Since the server is under-powered, this caused service degradation. In addition, it was using our previous SSL certificate, which broke DNS over TLS and DNS over HTTPS.

We apologize for any inconvenience caused.

Issue Start: 16:45 UTC, July 31st
Issue Stop: 19:05 UTC, July 31st

Latest Quad9 outages

Manilla (MNL2) - Packet Loss - about 1 month ago
Sydney (SYD) - Resolution Issues - 2 months ago
London (LHR) - Significant Service Degredation - 3 months ago
Fortaleza (qfor1) - Service Down - 3 months ago
OCSP Validation Broken - 4 months ago

The Status Page Aggregator Built for IT Teams

With IsDown, you can monitor all your critical services' official status pages from one centralized dashboard and receive instant alerts the moment an outage is detected. Say goodbye to constantly checking multiple sites for updates and stay ahead of outages with IsDown.

Start free trial

No credit card required · Cancel anytime · 4522 services available

Integrations with Slack Microsoft Teams Google Chat Datadog PagerDuty Zapier Discord Webhook