451 Unavailable For Legal Reasons
The HyperText Transfer Protocol (HTTP) 451 Unavailable For Legal Reasons
client error response 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
http
451 Unavailable For Legal Reasons
Example
This example response is taken from the IETF RFC (see below) and contains a reference to Monty Python's Life of Brian.
Note: the Link
header might also contain a rel="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 the rel="blocked-by"
link. This includes the name of the person or organization that made a legal demand resulting in the content's removal.
http
HTTP/1.1 451 Unavailable For Legal Reasons
Link: <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 |
Browser compatibility
BCD tables only load in the browser
See also
- Wikipedia: HTTP 451
- Wikipedia: Fahrenheit 451 (which gave this status code its number)