status Registered
Verified 2026-09-18 · registry updated 2025-09-15

HTTP 451 Unavailable For Legal Reasons

The resource is unavailable because of a legal demand or restriction.

Use 451 when access is blocked for legal reasons and provide an explanation when permitted.

httpstatus codelegalpolicy

Response (http)

HTTP/1.1 451 Unavailable For Legal Reasons

Use 451 when access is blocked for legal reasons and provide an explanation when permitted.

Common mistakes

  • Omitting the Link header to the legal-blockade notice that RFC 7725 requires.

Registry reference: rfc7725

Sources

Permalink: https://merginit.com/reference/http/status-451