Code	Name	Class	Meaning
100	Continue	Informational	The client should continue with its request.
101	Switching Protocols	Informational	The server is switching protocols as requested.
200	OK	Success	The request succeeded.
201	Created	Success	The request succeeded and a new resource was created.
202	Accepted	Success	The request was accepted but not yet processed.
204	No Content	Success	Success, but there is no content to return.
206	Partial Content	Success	The server delivered part of the resource (range request).
301	Moved Permanently	Redirection	The resource has permanently moved to a new URL.
302	Found	Redirection	The resource is temporarily at a different URL.
304	Not Modified	Redirection	The cached version is still valid.
307	Temporary Redirect	Redirection	Temporary redirect that preserves the method.
308	Permanent Redirect	Redirection	Permanent redirect that preserves the method.
400	Bad Request	Client Error	The server could not understand the request.
401	Unauthorized	Client Error	Authentication is required and has failed or not been provided.
403	Forbidden	Client Error	The server understood but refuses to authorize the request.
404	Not Found	Client Error	The requested resource could not be found.
405	Method Not Allowed	Client Error	The HTTP method is not supported for this resource.
408	Request Timeout	Client Error	The server timed out waiting for the request.
409	Conflict	Client Error	The request conflicts with the current state of the resource.
410	Gone	Client Error	The resource is permanently gone.
418	I'm a teapot	Client Error	An April Fools joke from RFC 2324.
422	Unprocessable Entity	Client Error	The request was well-formed but semantically invalid.
429	Too Many Requests	Client Error	The client has sent too many requests (rate limited).
500	Internal Server Error	Server Error	A generic server-side error occurred.
501	Not Implemented	Server Error	The server does not support the requested functionality.
502	Bad Gateway	Server Error	An upstream server returned an invalid response.
503	Service Unavailable	Server Error	The server is temporarily overloaded or down.
504	Gateway Timeout	Server Error	An upstream server did not respond in time.