Hypertext Transfer Protocol (HTTP) Status Code Registry
HTTP Status Codes
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
| Value |
Description |
Reference |
| 100 |
Continue |
RFC 9110, Section 15.2.1 |
| 101 |
Switching Protocols |
RFC 9110, Section 15.2.2 |
| 102 |
Processing |
RFC 2518 |
| 103 |
Early Hints |
RFC 8297 |
| 104 |
Upload Resumption Supported (TEMPORARY - registered 2024-11-13, extension registered 2025-09-15, expires 2026-11-13) |
draft-ietf-httpbis-resumable-upload-05 |
| 105-199 |
Unassigned |
|
| 200 |
OK |
RFC 9110, Section 15.3.1 |
| 201 |
Created |
RFC 9110, Section 15.3.2 |
| 202 |
Accepted |
RFC 9110, Section 15.3.3 |
| 203 |
Non-Authoritative Information |
RFC 9110, Section 15.3.4 |
| 204 |
No Content |
RFC 9110, Section 15.3.5 |
| 205 |
Reset Content |
RFC 9110, Section 15.3.6 |
| 206 |
Partial Content |
RFC 9110, Section 15.3.7 |
| 207 |
Multi-Status |
RFC 4918 |
| 208 |
Already Reported |
RFC 5842 |
| 209-225 |
Unassigned |
|
| 226 |
IM Used |
RFC 3229 |
| 227-299 |
Unassigned |
|
| 300 |
Multiple Choices |
RFC 9110, Section 15.4.1 |
| 301 |
Moved Permanently |
RFC 9110, Section 15.4.2 |
| 302 |
Found |
RFC 9110, Section 15.4.3 |
| 303 |
See Other |
RFC 9110, Section 15.4.4 |
| 304 |
Not Modified |
RFC 9110, Section 15.4.5 |
| 305 |
Use Proxy |
RFC 9110, Section 15.4.6 |
| 306 |
(Unused) |
RFC 9110, Section 15.4.7 |
| 307 |
Temporary Redirect |
RFC 9110, Section 15.4.8 |
| 308 |
Permanent Redirect |
RFC 9110, Section 15.4.9 |
| 309-399 |
Unassigned |
|
| 400 |
Bad Request |
RFC 9110, Section 15.5.1 |
| 401 |
Unauthorized |
RFC 9110, Section 15.5.2 |
| 402 |
Payment Required |
RFC 9110, Section 15.5.3 |
| 403 |
Forbidden |
RFC 9110, Section 15.5.4 |
| 404 |
Not Found |
RFC 9110, Section 15.5.5 |
| 405 |
Method Not Allowed |
RFC 9110, Section 15.5.6 |
| 406 |
Not Acceptable |
RFC 9110, Section 15.5.7 |
| 407 |
Proxy Authentication Required |
RFC 9110, Section 15.5.8 |
| 408 |
Request Timeout |
RFC 9110, Section 15.5.9 |
| 409 |
Conflict |
RFC 9110, Section 15.5.10 |
| 410 |
Gone |
RFC 9110, Section 15.5.11 |
| 411 |
Length Required |
RFC 9110, Section 15.5.12 |
| 412 |
Precondition Failed |
RFC 9110, Section 15.5.13 |
| 413 |
Content Too Large |
RFC 9110, Section 15.5.14 |
| 414 |
URI Too Long |
RFC 9110, Section 15.5.15 |
| 415 |
Unsupported Media Type |
RFC 9110, Section 15.5.16 |
| 416 |
Range Not Satisfiable |
RFC 9110, Section 15.5.17 |
| 417 |
Expectation Failed |
RFC 9110, Section 15.5.18 |
| 418 |
(Unused) |
RFC 9110, Section 15.5.19 |
| 419-420 |
Unassigned |
|
| 421 |
Misdirected Request |
RFC 9110, Section 15.5.20 |
| 422 |
Unprocessable Content |
RFC 9110, Section 15.5.21 |
| 423 |
Locked |
RFC 4918 |
| 424 |
Failed Dependency |
RFC 4918 |
| 425 |
Too Early |
RFC 8470 |
| 426 |
Upgrade Required |
RFC 9110, Section 15.5.22 |
| 427 |
Unassigned |
|
| 428 |
Precondition Required |
RFC 6585 |
| 429 |
Too Many Requests |
RFC 6585 |
| 430 |
Unassigned |
|
| 431 |
Request Header Fields Too Large |
RFC 6585 |
| 432-450 |
Unassigned |
|
| 451 |
Unavailable For Legal Reasons |
RFC 7725 |
| 452-499 |
Unassigned |
|
| 500 |
Internal Server Error |
RFC 9110, Section 15.6.1 |
| 501 |
Not Implemented |
RFC 9110, Section 15.6.2 |
| 502 |
Bad Gateway |
RFC 9110, Section 15.6.3 |
| 503 |
Service Unavailable |
RFC 9110, Section 15.6.4 |
| 504 |
Gateway Timeout |
RFC 9110, Section 15.6.5 |
| 505 |
HTTP Version Not Supported |
RFC 9110, Section 15.6.6 |
| 506 |
Variant Also Negotiates |
RFC 2295 |
| 507 |
Insufficient Storage |
RFC 4918 |
| 508 |
Loop Detected |
RFC 5842 |
| 509 |
Unassigned |
|
| 510 |
Not Extended (OBSOLETED) |
RFC 2774; Status change of HTTP experiments to Historic |
| 511 |
Network Authentication Required |
RFC 6585 |
| 512-599 |
Unassigned |
|
