Hypertext Transfer Protocol (HTTP) Status Code Registry

Last Updated: 2024-11-13
Available Formats: XML
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Plain text

Registry included below

HTTP Status Codes

HTTP Status Codes

Registration Procedure(s)

IETF Review

Reference

[RFC9110, Section 16.2.1]

Note

1xx: Informational - Request received, continuing process
2xx: Success - The action was successfully received, understood, and accepted
3xx: Redirection - Further action must be taken in order to complete the request
4xx: Client Error - The request contains bad syntax or cannot be fulfilled
5xx: Server Error - The server failed to fulfill an apparently valid request

Available Formats

CSV

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

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Hypertext Transfer Protocol (HTTP) Status Code Registry

HTTP Status Codes

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