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HTTP Status Codes Cheat Sheet

A quick cheatsheet for HTTP status codes (from RFC 2616 and Wikipedia’s List of HTTP status codes).

Informational   1xx
Successful      2xx
Redirection     3xx
Client Error    4xx
Server Error    5xx

100 Continue
101 Switching Protocols
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102 Processing (WebDAV) (RFC 2518)
103 Checkpoint
122 Request-URI too long (Microsoft/IE7)
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200 OK
201 Created (+ etag)
202 Accepted
203 Non-Authoritative Information
204 No Content (no body)
205 Reset Content (reset view)
206 Partial Content (+ range header)
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207 Multi-Status (WebDAV) (RFC 4918)
226 IM Used (RFC 3229)
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300 Multiple Choices
301 Moved Permanently
302 Found
303 See Other (since HTTP/1.1)
304 Not Modified
305 Use Proxy (since HTTP/1.1)
306 Switch Proxy (no longer used)
307 Temporary Redirect (since HTTP/1.1)
308 Resume Incomplete
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400 Bad Request
401 Unauthorized
402 Payment Required (future)
403 Forbidden
404 Not Found
405 Method Not Allowed
406 Not Acceptable
407 Proxy Authentication Required
408 Request Timeout
409 Conflict (with the resource)
410 Gone
411 Length Required
412 Precondition Failed
413 Request Entity Too Large
414 Request-URI Too Long
415 Unsupported Media Type
416 Requested Range Not Satisfiable
417 Expectation Failed
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418 I am a teapot (RFC 2324)
420 Enhance Your Calm (Twitter API)
422 Unprocessable Entity (WebDAV) (RFC 4918)
423 Locked (WebDAV) (RFC 4918)
424 Failed Dependency (WebDAV) (RFC 4918)
425 Unordered Collection (RFC 3648)
426 Upgrade Required (RFC 2817)
428 Precondition Required (RFC 2616 pending)
429 Too Many Requests (RFC 2616 pending)
431 Request Header Fields Too Large
444 No Response (Nginx)
449 Retry With (Microsoft)
450 Blocked by Windows Parental Controls (Microsoft)
499 Client Closed Request (Nginx)
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500 Internal Server Error
501 Not Implemented
502 Bad Gateway
503 Service Unavailable
504 Gateway Timeout
505 HTTP Version Not Supported
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506 Variant Also Negotiates (RFC 2295)
507 Insufficient Storage (WebDAV)(RFC 4918)
509 Bandwidth Limit Exceeded (Apache)
510 Not Extended (RFC 2774)
511 Network Authentication Required  (RFC 2616 pending)
598 Network read timeout error (Informal convention) 
599 Network connect timeout error (Informal convention)