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HTTP Status Codes — Complete Guide

Authoritative, human-friendly reference with search, filters, and export. Official list mirrors the IANA registry; names follow RFC 9110. Includes a quick view of commonly seen nonstandard codes.


How to use this page

  • Filter by class using the chips below; search matches any column.
  • Use Copy CSV or Copy JSON to paste into docs or code.
  • Click a spec link for the normative definition (RFC or registry).
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Code Phrase Class Standard Spec / Reference Notes

Notes:

Names use the latest terminology from RFC 9110 (for example, 413 Content Too Large and 422 Unprocessable Content). Code 510 Not Extended is marked obsoleted. Code 104 Upload Resumption Supported is a temporary informational code while resumable upload is standardized. Code 418 is reserved as Unused in the standard; the joke “I’m a teapot” appears in the nonstandard list.

Sources

This page mirrors the IANA HTTP Status Code Registry and RFC 9110 terminology, with friendly phrasing and examples added for education. Nonstandard codes are included only to help you recognize what you might encounter in logs and proxies.