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HTTP Status Checker

HTTP Status Checker with server-side checks of public network targets and result export.

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NETWORK · DIAGNOSTICS

HTTP Status Checker

Check a public HTTP(S) URL from this server: actual status, headers, IP, timing and redirects. Choose GET/HEAD; no body is read or login cookies forwarded. Standard ports only, up to 3 redirects.

The target and options are sent to this server, which connects to the target. Results reflect the server’s network connection.

HTTP status code reference

IANA registry snapshot 2026-09-21 · Source

75 / 75

CodeIANA description / registration statusReference
100Continue[RFC9110, Section 15.2.1]
101Switching Protocols[RFC9110, Section 15.2.2]
102Processing[RFC2518]
103Early Hints[RFC8297]
104Upload Resumption Supported (TEMPORARY - registered 2024-11-13, extension registered 2025-09-15, expires 2026-11-13)[draft-ietf-httpbis-resumable-upload-05]
105-199Unassigned—
200OK[RFC9110, Section 15.3.1]
201Created[RFC9110, Section 15.3.2]
202Accepted[RFC9110, Section 15.3.3]
203Non-Authoritative Information[RFC9110, Section 15.3.4]
204No Content[RFC9110, Section 15.3.5]
205Reset Content[RFC9110, Section 15.3.6]
206Partial Content[RFC9110, Section 15.3.7]
207Multi-Status[RFC4918]
208Already Reported[RFC5842]
209-225Unassigned—
226IM Used[RFC3229]
227-299Unassigned—
300Multiple Choices[RFC9110, Section 15.4.1]
301Moved Permanently[RFC9110, Section 15.4.2]
302Found[RFC9110, Section 15.4.3]
303See Other[RFC9110, Section 15.4.4]
304Not Modified[RFC9110, Section 15.4.5]
305Use Proxy[RFC9110, Section 15.4.6]
306(Unused)[RFC9110, Section 15.4.7]
307Temporary Redirect[RFC9110, Section 15.4.8]
308Permanent Redirect[RFC9110, Section 15.4.9]
309-399Unassigned—
400Bad Request[RFC9110, Section 15.5.1]
401Unauthorized[RFC9110, Section 15.5.2]
402Payment Required[RFC9110, Section 15.5.3]
403Forbidden[RFC9110, Section 15.5.4]
404Not Found[RFC9110, Section 15.5.5]
405Method Not Allowed[RFC9110, Section 15.5.6]
406Not Acceptable[RFC9110, Section 15.5.7]
407Proxy Authentication Required[RFC9110, Section 15.5.8]
408Request Timeout[RFC9110, Section 15.5.9]
409Conflict[RFC9110, Section 15.5.10]
410Gone[RFC9110, Section 15.5.11]
411Length Required[RFC9110, Section 15.5.12]
412Precondition Failed[RFC9110, Section 15.5.13]
413Content Too Large[RFC9110, Section 15.5.14]
414URI Too Long[RFC9110, Section 15.5.15]
415Unsupported Media Type[RFC9110, Section 15.5.16]
416Range Not Satisfiable[RFC9110, Section 15.5.17]
417Expectation Failed[RFC9110, Section 15.5.18]
418(Unused)[RFC9110, Section 15.5.19]
419-420Unassigned—
421Misdirected Request[RFC9110, Section 15.5.20]
422Unprocessable Content[RFC9110, Section 15.5.21]
423Locked[RFC4918]
424Failed Dependency[RFC4918]
425Too Early[RFC8470]
426Upgrade Required[RFC9110, Section 15.5.22]
427Unassigned—
428Precondition Required[RFC6585]
429Too Many Requests[RFC6585]
430Unassigned—
431Request Header Fields Too Large[RFC6585]
432-450Unassigned—
451Unavailable For Legal Reasons[RFC7725]
452-499Unassigned—
500Internal Server Error[RFC9110, Section 15.6.1]
501Not Implemented[RFC9110, Section 15.6.2]
502Bad Gateway[RFC9110, Section 15.6.3]
503Service Unavailable[RFC9110, Section 15.6.4]
504Gateway Timeout[RFC9110, Section 15.6.5]
505HTTP Version Not Supported[RFC9110, Section 15.6.6]
506Variant Also Negotiates[RFC2295]
507Insufficient Storage[RFC4918]
508Loop Detected[RFC5842]
509Unassigned—
510Not Extended (OBSOLETED)[RFC2774][Status change of HTTP experiments to Historic]
511Network Authentication Required[RFC6585]
512-599Unassigned—

Unassigned, unused, obsolete and temporary entries retain the registry labels. Check expiry dates for temporary registrations. 1xx informational; 2xx success; 3xx redirection; 4xx client error; 5xx server error.

Processed content stays in this page’s memory and cannot be recovered after clearing or closing.

About this tool

Check a public HTTP(S) URL from this server: actual status, headers, IP, timing and redirects. Choose GET/HEAD; no body is read or login cookies forwarded. Standard ports only, up to 3 redirects. The target and options are sent to this server; results reflect its network. Inputs and results are not stored. Metrics only include status, timing, counts and copy/download actions.

How to use

  1. Enter a public URL or host/IP and choose a method or ports.
  2. Run the check; cancel at any time. Up to 12 checks per session per minute.
  3. Review status, validation or individual port results; copy/download JSON. Certificates can also be downloaded as PEM.

Frequently asked questions

Why does this differ from my computer?

Checks originate from this server; DNS, network egress, firewalls and CA stores may differ. Private, loopback and reserved addresses are blocked. A TCP connection does not prove application health, and revocation is not checked.

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