Website Uptime Checker
Check if a website is up or down and measure its response time from our global edge server.
Website Uptime Checker
The Website Uptime Checker tests whether a website is accessible and measures its HTTP response time from our global edge server. This helps you quickly diagnose whether a site is down for everyone or just for you.
What Response Times Mean
- Under 200 ms: Excellent — fast server response.
- 200–500 ms: Good — acceptable for most web applications.
- 500 ms – 1 s: Slow — users may notice the delay.
- Over 1 second: Poor — significant impact on user experience and SEO.
Common HTTP Status Codes
- 200 OK: The site is up and responding normally.
- 301/302: Redirect — the server is redirecting to another URL.
- 403 Forbidden: Access denied — server reachable but blocking the request.
- 404 Not Found: Page doesn't exist, but server is responding.
- 500/503: Server error — the site may be experiencing issues.