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HTTP Status Codes

Browse and search all standard HTTP status codes from 1xx to 5xx with names and descriptions.

100 Continue The server has received the request headers and the client should proceed to send the request body.
101 Switching Protocols The server agrees to switch protocols as requested by the client via the Upgrade header.
200 OK The request succeeded and the response body contains the requested resource.
201 Created The request succeeded and a new resource was created as a result.
202 Accepted The request has been accepted for processing, but processing has not been completed.
204 No Content The request succeeded but there is no content to send in the response body.
206 Partial Content The server is delivering only part of the resource due to a Range header in the request.
301 Moved Permanently The requested resource has been permanently moved to a new URL.
302 Found The requested resource temporarily resides under a different URL.
303 See Other The response to the request can be found under a different URL using a GET method.
304 Not Modified The resource has not been modified since the version specified by the request headers.
307 Temporary Redirect The requested resource temporarily resides under a different URL and the method must not change.
308 Permanent Redirect The resource has permanently moved to a new URL and the method must not change.
400 Bad Request The server cannot process the request due to a client error such as malformed syntax.
401 Unauthorized Authentication is required and has failed or has not yet been provided.
403 Forbidden The server understands the request but refuses to authorize it.
404 Not Found The requested resource could not be found on the server.
405 Method Not Allowed The HTTP method used is not allowed for the requested resource.
406 Not Acceptable The server cannot produce a response matching the acceptable values defined in the request headers.
408 Request Timeout The server timed out waiting for the request from the client.
409 Conflict The request conflicts with the current state of the target resource.
410 Gone The requested resource is no longer available and has been permanently removed.
411 Length Required The server requires the Content-Length header to be specified in the request.
412 Precondition Failed One or more conditions given in the request header fields evaluated to false.
413 Content Too Large The request body exceeds the limits defined by the server.
414 URI Too Long The URI requested by the client is longer than the server is willing to interpret.
415 Unsupported Media Type The media format of the request is not supported by the server.
416 Range Not Satisfiable The range specified by the Range header cannot be satisfied by the current representation of the resource.
417 Expectation Failed The expectation indicated by the Expect request header could not be met by the server.
418 I'm a Teapot The server refuses to brew coffee because it is, permanently, a teapot.
422 Unprocessable Content The server understands the request entity but cannot process it due to semantic errors.
423 Locked The source or destination resource of a method is locked.
426 Upgrade Required The client should switch to the protocol specified in the Upgrade header.
428 Precondition Required The origin server requires the request to be conditional to prevent lost-update problems.
429 Too Many Requests The user has sent too many requests in a given amount of time (rate limiting).
431 Request Header Fields Too Large The server is unwilling to process the request because header fields are too large.
451 Unavailable For Legal Reasons The server is denying access to the resource as a consequence of a legal demand.
500 Internal Server Error The server encountered an unexpected condition that prevented it from fulfilling the request.
501 Not Implemented The server does not support the functionality required to fulfill the request.
502 Bad Gateway The server, acting as a gateway, received an invalid response from an upstream server.
503 Service Unavailable The server is temporarily unable to handle requests due to overload or maintenance.
504 Gateway Timeout The server, acting as a gateway, did not receive a timely response from an upstream server.
505 HTTP Version Not Supported The server does not support the HTTP protocol version used in the request.
511 Network Authentication Required The client needs to authenticate to gain network access, typically used by captive portals.