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.
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.
Link header might also contain a
rel="blocked-by" relation identifying the entity and implementing blockage, not any other entity mandating it.
Any attempt to identify the entity ultimately responsible for the resource being unavailable, such as the name of the person or organization that made a legal demand resulting in the content's removal belongs in the response body, not in the
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>
|RFC 7725: 451 Unavailable For Legal Reasons||An HTTP Status Code to Report Legal Obstacles|
The information shown below has been pulled from MDN's GitHub (https://github.com/mdn/browser-compat-data).
The compatibility table in this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.
|Chrome||Edge||Firefox||Internet Explorer||Opera||Safari||Android webview||Chrome for Android||Edge Mobile||Firefox for Android||Opera for Android||iOS Safari||Samsung Internet|
|Basic support||Chrome Full support Yes||Edge Full support Yes||Firefox Full support Yes||IE Full support Yes||Opera Full support Yes||Safari Full support Yes||WebView Android Full support Yes||Chrome Android Full support Yes||Edge Mobile Full support Yes||Firefox Android Full support Yes||Opera Android Full support Yes||Safari iOS Full support Yes||Samsung Internet Android Full support Yes|
- Full support
- Full support