Is It Down Checker
People answering "is it up, indexed, redirecting or reachable" right now.
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How this tool runs
Your input is processed on our server and deleted as soon as the result is returned.
- Max input per run
- 2 KB (under 1 MB)
- Rate limit
- 120 runs per hour
- Retention
- Nothing is stored: the input is discarded once the response is sent.
- Engine
url.diagnose
HTTP status, redirect chain, resolved addresses, headers and security headers behind one SSRF-guarded fetch boundary (scheme allow-list, private-range rejection on every hop, byte cap).
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