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HTTP Status Codes

View the full list of HTTP status codes colour-coded by class: 2xx success, 3xx redirects, 4xx client errors, and 5xx server errors. Search by code number or keyword to quickly look up the meaning, common causes, and typical fixes — essential when developing or debugging APIs and web services.

1xx2xx3xx4xx5xx

Code	Range	Name	Description
100	Informational	Continue	The client should continue with the request.
101	Informational	Switching Protocols	The server is switching protocols (e.g., WebSocket).
102	Informational	Processing	The server is processing the request (WebDAV).
103	Informational	Early Hints	Sends some response headers before the final response.
200	Success	OK	The request was successful.
201	Success	Created	A new resource was created as a result.
202	Success	Accepted	The request has been accepted but not yet processed.
203	Success	Non-Authoritative Information	The returned information may be from a modified copy.
204	Success	No Content	Request succeeded but no content to return.
205	Success	Reset Content	Request succeeded. Reset the document view.
206	Success	Partial Content	Returning partial content for a range request.
207	Success	Multi-Status	Response contains status for multiple resources (WebDAV).
301	Redirection	Moved Permanently	The resource has been permanently redirected to a new URL.
302	Redirection	Found	The resource is temporarily redirected to a different URL.
303	Redirection	See Other	See the response at another URI using GET.
304	Redirection	Not Modified	The resource has not been modified. Use cached version.
307	Redirection	Temporary Redirect	Temporary redirect while keeping the original method.
308	Redirection	Permanent Redirect	Permanent redirect while keeping the original method.
400	Client Error	Bad Request	The server could not understand the request syntax.
401	Client Error	Unauthorized	Authentication is required. Login needed.
402	Client Error	Payment Required	Payment is required (reserved for future use).
403	Client Error	Forbidden	The server understood but refuses due to insufficient permissions.
404	Client Error	Not Found	The requested resource could not be found.
405	Client Error	Method Not Allowed	The HTTP method used is not allowed for this resource.
406	Client Error	Not Acceptable	The server cannot produce content matching the Accept headers.
407	Client Error	Proxy Authentication Required	Proxy authentication is required.
408	Client Error	Request Timeout	The server timed out waiting for the request.
409	Client Error	Conflict	The request conflicts with the current state of the resource.
410	Client Error	Gone	The resource has been permanently deleted.
411	Client Error	Length Required	The Content-Length header is required.
412	Client Error	Precondition Failed	A precondition in the request headers was not met.
413	Client Error	Payload Too Large	The request body exceeds the server limit.
414	Client Error	URI Too Long	The request URI exceeds the server limit.
415	Client Error	Unsupported Media Type	The media type is not supported.
418	Client Error	I'm a Teapot	The server is a teapot and refuses to brew coffee (RFC 2324).
422	Client Error	Unprocessable Entity	The syntax is correct but the content is semantically invalid.
423	Client Error	Locked	The resource is locked (WebDAV).
426	Client Error	Upgrade Required	The client must upgrade to a different protocol.
428	Client Error	Precondition Required	The server requires conditional requests.
429	Client Error	Too Many Requests	Too many requests sent. Please slow down.
431	Client Error	Request Header Fields Too Large	Request header fields are too large.
451	Client Error	Unavailable For Legal Reasons	Unavailable due to legal reasons.
500	Server Error	Internal Server Error	The server encountered an unexpected error.
501	Server Error	Not Implemented	The server does not support the request method.
502	Server Error	Bad Gateway	The gateway received an invalid response from the upstream server.
503	Server Error	Service Unavailable	The server is temporarily unavailable.
504	Server Error	Gateway Timeout	The gateway did not receive a timely response from the upstream server.
505	Server Error	HTTP Version Not Supported	The HTTP version is not supported.
507	Server Error	Insufficient Storage	The server has insufficient storage.
508	Server Error	Loop Detected	The server detected an infinite loop while processing (WebDAV).
511	Server Error	Network Authentication Required	Network authentication is required for access.