This is a general server response error, or a “catch-all” error. This error occurs when

This error response indicates the server is being censored by the government. This error is

This error response indicates the server refused the request due to a header that is

This response error indicates the user has made too many simultaneous, or consecutive, requests to

This error response indicates that a a precondition must be provided to complete the request.

This response error indicates the server refused the request due to the current protocol being

!Caution: this is a response for experimental technology. Check browser compatibility before using in production.

This error response indicates the server cannot process the instructions of the request. This error

This response error was originally used as an April Fools’ joke. The error reflects that

This response code indicates the server could not meet the response set in the Expect