The HTTP 451 Unavailable For Legal Reasons client error response code indicates that the user requested a resource which is not available due to legal reasons, such as a web page for which a legal action has been issued.
451 Unavailable For Legal Reasons
This example response is taken from the IETF RFC (see below) and contains a reference to Monty Python's Life of Brian.
Note that the Link header might also contain a rel="blocked-by" relation identifying the entity responsible for the resource being unavailable, such as the name of the person or organization which made a legal demand resulting in the content's removal.
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>
| Specification | Title |
|---|---|
| RFC 7725: 451 Unavailable For Legal Reasons | An HTTP Status Code to Report Legal Obstacles |
| Feature | Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | Servo |
|---|---|---|---|---|---|---|---|
| Basic Support | (Yes) | (Yes) | (Yes) | (Yes) | (Yes) | (Yes) | (Yes) |
| Feature | Android | Chrome for Android | Edge Mobile | Firefox for Android | IE Mobile | Opera Mobile | Safari Mobile |
|---|---|---|---|---|---|---|---|
| Basic Support | (Yes) | (Yes) | (Yes) | (Yes) | (Yes) | (Yes) | (Yes) |
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Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/HTTP/Status/451