HTTP 451 Unavailable For Legal Reasons (RFC 7725) indicates the server is denying access due to a legal demand. Named after Ray Bradbury's Fahrenheit 451, this status is used for government censorship, court-ordered takedowns, DMCA notices, GDPR right-to-be-forgotten, and geo-blocking for legal compliance. The response SHOULD identify the legal authority making the demand via a Link header with rel='blocked-by'.
Response includes the status code, standard headers (including Content-Type), and a small diagnostic JSON body describing the request and returned status.
Simulator URL (copy in the app after load — not a normal link):
https://httpstatus.com/api/status/451
Example request:
curl -i "https://httpstatus.com/api/status/451"