400-Errors
400101: HTTP_BAD_REQUEST Client Error.
The request cannot be fulfilled due to multiple errors
308-Errors
308101: HTTP_PERMANENTLY_REDIRECT Redirection.
The resource requested has been permanently moved to a different URL.
307-Errors
307101: HTTP_TEMPORARY_REDIRECT Redirection.
The resource requested has been temporarily moved.
306-Errors
306101: HTTP_RESERVED Redirection.
The requested URL is no longer in use.
305-Errors
305101: HTTP_USE_PROXY Redirection.
The requested URL should be redirected to another URL (PROXY) for security concerning governing the requested URL.