451 Unavailable For Legal Reasons

This is an educational reference page about HTTP 451 Unavailable For Legal Reasons. The page itself is served as 200 OK so it can be indexed as HTTP documentation.

A server operator has received a legal demand to deny access to a resource or to a set of resources that includes the requested resource. The code 451 was chosen as a reference to the novel Fahrenheit 451 (see the Acknowledgements in the RFC).

Specification

Registered in the IANA HTTP Status Code Registry as Unavailable For Legal Reasons. Defined in RFC 7725, Section 3.

4xx client error – the request contains bad syntax or cannot be fulfilled