451
HTTP 451 Unavailable For Legal Reasons
4xx Client Error
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4xx Client Error
RFC 7725, Section 3
What is HTTP 451 Unavailable For Legal Reasons?
The 451 (Unavailable For Legal Reasons) status code indicates that the server is denying access to the resource as a consequence of a legal demand. The response should include an explanation in the body citing the legal demand. The number 451 is a reference to Ray Bradbury's novel Fahrenheit 451.
Common Use Cases
- Content blocked by government censorship
- Copyright infringement takedown (DMCA)
- Content blocked by court order