HTTP Status Codes

The HTTP Status Code is a 3-digit integer result code summarizing the outcome of a particular HTTP request. These codes are summarized below. The first digit of the Status Code defines the class of response. The last two digits have no particular "category" meaning.

There are five classes of Status Code based on the first digit of the code:

1xx	Informational	Request received, continuing process
2xx	Success	The request was successfully received, understood, and accepted
3xx	Redirection	Further action must be taken 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

Detailed Code Semantics

100 Continue

101 Switching Protocols

200 OK

201 Created

202 Accepted

203 Non-Authoritative Information

204 No Content

205 Reset Content

206 Partial Content

300 Multiple Choices

301 Moved Permanently

302 Found

303 See Other

304 Not Modified

305 Use Proxy

307 Temporary Redirect

400 Bad Request

401 Unauthorized

402 Payment Required

403 Forbidden

404 Not Found

405 Method Not Allowed

406 Not Acceptable

407 Proxy Authentication Required

408 Request Time-out

409 Conflict

410 Gone

411 Length Required

412 Precondition Failed

413 Request Entity Too Large

414 Request-URI Too Large

415 Unsupported Media Type

416 Requested range not satisfiable

417 Expectation Failed

500 Internal Server Error

501 Not Implemented

502 Bad Gateway

503 Service Unavailable

504 Gateway Timeout

505 HTTP Version not supported

extension-code = 3DIGIT Reason-Phrase = *<TEXT, excluding CR, LF>

NOTE: HTTP status codes are extensible. HTTP applications are not required to understand the meaning of all registered status codes, though such understanding is obviously desirable.