5×× Server Error 599 Network Connect Timeout Error This status code is not specified in any RFCs, but is used by some HTTP proxies to signal a...
5×× Server Error 511 Network Authentication Required The client needs to authenticate to gain network access. The response representation SHOULD...
5×× Server Error 510 Not Extended The policy for accessing the resource has not been met in the request. The server should send back all the...
5×× Server Error 508 Loop Detected The server terminated an operation because it encountered an infinite loop while processing a request with...
5×× Server Error 507 Insufficient Storage The method could not be performed on the resource because the server is unable to store the...
5×× Server Error 506 Variant Also Negotiates The server has an internal configuration error: the chosen variant resource is configured to engage...
5×× Server Error 505 HTTP Version Not Supported The server does not support, or refuses to support, the major version of HTTP that was used in...
5×× Server Error 504 Gateway Timeout The server, while acting as a gateway or proxy, did not receive a timely response from an upstream server...
5×× Server Error 503 Service Unavailable The server is currently unable to handle the request due to a temporary overload or scheduled...
5×× Server Error 502 Bad Gateway The server, while acting as a gateway or proxy, received an invalid response from an inbound server it accessed...
5×× Server Error 501 Not Implemented The server does not support the functionality required to fulfill the request. This is the appropriate...
5×× Server Error 500 Internal Server Error The server encountered an unexpected condition that prevented it from fulfilling the request....
4×× Client Error 499 Client Closed Request A non-standard status code introduced by nginx for the case when a client closes the connection while...
4×× Client Error 451 Unavailable For Legal Reasons The server is denying access to the resource as a consequence of a legal demand. The server...
4×× Client Error 444 Connection Closed Without Response A non-standard status code used to instruct nginx to close the connection without...
4×× Client Error 431 Request Header Fields Too Large The server is unwilling to process the request because its header fields are too large. The...
4×× Client Error 429 Too Many Requests The user has sent too many requests in a given amount of time ("rate limiting"). The response...
4×× Client Error 428 Precondition Required The origin server requires the request to be conditional. Its typical use is to avoid the "lost...
4×× Client Error 426 Upgrade Required The server refuses to perform the request using the current protocol but might be willing to do so after...
4×× Client Error 424 Failed Dependency The method could not be performed on the resource because the requested action depended on another action...
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