451 Unavailable For Legal Reasons
The HTTP451 Unavailable For Legal Reasonsclient error response status code indicates that the user requested a resource that is not available due to legal reasons, such as a web page for which a legal action has been issued.
Status
451 Unavailable For Legal ReasonsExamples
Response with Link header
This example response is taken from the IETF RFC (see below) and contains a reference toMonty Python's Life of Brian.
Note:TheLink header might also contain arel="blocked-by" relation identifying the entity implementing the blockage, not any other entity mandating it.
Any attempt to identify the entity ultimately responsible for the resource being unavailable belongs in the response body, not in therel="blocked-by" link. This includes the name of the person or organization that made a legal demand resulting in the content's removal.
HTTP/1.1 451 Unavailable For Legal ReasonsLink: <https://spqr.example.org/legislatione>; rel="blocked-by"Content-Type: text/html<html> <head><title>Unavailable For Legal Reasons</title></head> <body> <h1>Unavailable For Legal Reasons</h1> <p>This request may not be serviced in the Roman Province of Judea due to the Lex Julia Majestatis, which disallows access to resources hosted on servers deemed to be operated by the People's Front of Judea.</p> </body></html>Specifications
| Specification |
|---|
| An HTTP Status Code to Report Legal Obstacles # n-451-unavailable-for-legal-reasons |
See also
- HTTP response status codes
- Wikipedia: HTTP 451
- Wikipedia: Fahrenheit 451 (which gave this status code its number)