MDN Web Docs is UP
and responding normally
Web development documentation
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Save it as a Vartio monitor and get alerts when our EU checks detect downtime or degraded response.
Response Time History
Recent Activity (7 days)
Response time has held steady, averaging 32ms.
No status changes in the last 7 days — MDN Web Docs has been consistently up.
About MDN Web Docs
- Website
- developer.mozilla.org
- Category
- Developer Tools
- Monitored from
- EU (Helsinki, Frankfurt, Amsterdam)
- Check interval
- Every 5 minutes
- Monitoring since
- March 30, 2026 (193 days, 5,242 checks)
How we measure this: checks run from EU servers only, so a result here reflects what the EU sees, not a global view. A regional outage, CDN edge-cache issue, or bot/WAF protection that treats our monitoring probe differently than a real visitor can all cause this to disagree with MDN Web Docs's own status page — that's a limitation of any third-party checker, not just this one.
Frequently Asked Questions
Is MDN Web Docs down right now?
MDN Web Docs is currently up and running. Our last check from EU servers showed a response time of 22ms with 100% uptime over the past 193 days.
What is MDN Web Docs's uptime?
MDN Web Docs has a 100% uptime measured over 193 days, based on 5,242 checks from Vartio's EU monitoring servers located in Helsinki, Frankfurt, and Amsterdam.
How do I check if MDN Web Docs is down?
Vartio monitors MDN Web Docs every 5 minutes from multiple EU servers and runs a live check when you visit this page. This page shows the current status, response time, and uptime history. You can also monitor your own services for free.
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