HTTP Status Code Lookup

Continue

Server received headers; client should send the body.

Switching Protocols

Upgrading, e.g. to WebSocket.

OK

Request succeeded.

Created

A new resource was created (usually after POST).

Accepted

Accepted for processing, not completed yet.

No Content

Success with no response body.

Partial Content

Range request served (video streaming, resumable downloads).

Moved Permanently

Resource has a new permanent URL. Passes SEO value.

Found

Temporary redirect.

See Other

Redirect to GET another URL after POST.

Not Modified

Cached version is still valid.

Temporary Redirect

Temporary redirect keeping the HTTP method.

Permanent Redirect

Permanent redirect keeping the HTTP method.

Bad Request

Malformed request syntax or invalid parameters.

Unauthorized

Authentication is required or failed.

Forbidden

Authenticated but not allowed.

Not Found

Resource doesn't exist.

Method Not Allowed

HTTP method not supported for this URL.

Not Acceptable

Can't produce a response matching Accept headers.

Request Timeout

Client took too long to send the request.

Conflict

Request conflicts with current state (e.g. duplicate).

Gone

Resource permanently removed.

Length Required

Content-Length header missing.

Payload Too Large

Request body too big.

URI Too Long

URL too long.

Unsupported Media Type

Content-Type not supported.

I'm a teapot

An April Fools' joke from RFC 2324.

Unprocessable Content

Validation failed.

Too Early

Server unwilling to process a replayed request.

Too Many Requests

Rate limit exceeded.

Request Header Fields Too Large

Headers (often cookies) too big.

Unavailable For Legal Reasons

Blocked for legal reasons.

Internal Server Error

Generic server-side error.

Not Implemented

Server doesn't support this functionality.

Bad Gateway

Upstream server returned an invalid response.

Service Unavailable

Server overloaded or in maintenance.

Gateway Timeout

Upstream server didn't respond in time.

HTTP Version Not Supported

HTTP version not supported.

Insufficient Storage

Server is out of storage.

Network Authentication Required

Captive portal login needed (e.g. hotel Wi-Fi).