Probe any URL's server to confirm whether it's UP or DOWN, the exact HTTP status code returned, and the response time in milliseconds. Useful for monitoring your own infrastructure and third-party dependencies.
A server status check is the foundational uptime probe — it issues an HTTP request and reports what came back. The status code tells you the type of response: 200 OK (healthy), 301/302 (redirecting), 404 (not found), 5xx (server error). The response time tells you how fast the server is performing under current load.
Enter a URL and the tool sends an HTTP request through a CORS-friendly proxy. The status code, elapsed time and an UP/DOWN verdict are displayed in three stat boxes. UP means status under 400; DOWN means 4xx, 5xx, or no response.
Use it before reporting an outage to a vendor, when troubleshooting your own deploys, when investigating broken integrations, when monitoring third-party APIs your site depends on, or when checking whether a competitor's site is having issues.
For continuous monitoring set up UptimeRobot, Pingdom or BetterStack — they probe every 1–5 minutes and alert via email/SMS/Slack when downtime exceeds your threshold. This tool is best for one-off manual checks during incidents.
Service Unavailable — the server is reachable but temporarily can't serve the request. Often appears during deploys or under heavy load.
Different probes hit different geographic regions and your CDN may be edge-failing in one region. Use multi-region monitoring for definitive results.
Yes — every click sends a fresh request. No caching.
Explore more website tracking tools on the tool hub — or jump straight to the Link Tracker, Page Comparison Tool, Spider Simulator.