407
Proxy Authentication Required
Client errors (4xx)·RFC 9110
What 407 means
The client must authenticate with a proxy before the request can proceed.
Like 401 but for a proxy, using the Proxy-Authenticate header.
Client errors (4xx)
The request contains an error from the client — bad syntax, missing auth or a wrong URL.
Other 4xx codes
400Bad Request401Unauthorized402Payment Required403Forbidden404Not Found405Method Not Allowed406Not Acceptable408Request Timeout409Conflict410Gone411Length Required412Precondition Failed413Content Too Large414URI Too Long415Unsupported Media Type416Range Not Satisfiable417Expectation Failed418I'm a teapot421Misdirected Request422Unprocessable Content423Locked424Failed Dependency425Too Early426Upgrade Required428Precondition Required429Too Many Requests431Request Header Fields Too Large451Unavailable For Legal Reasons
FAQ — 407
What does HTTP 407 mean?
407 Proxy Authentication Required: The client must authenticate with a proxy before the request can proceed. Like 401 but for a proxy, using the Proxy-Authenticate header.
Which class does status code 407 belong to?
407 is a Client errors (4xx) code. The request contains an error from the client — bad syntax, missing auth or a wrong URL.
Where is the 407 code defined?
Status code 407 is defined in RFC 9110 and is part of the IANA HTTP Status Code Registry.