The resource is unavailable for legal reasons, such as a takedown order.
Quick facts
When does it occur
The resource is unavailable for legal reasons, such as a takedown order.
It belongs to the 4xx Client Error class of responses, defined in draft-ietf-httpbis-legally-restricted-status.
Browse all codes in this class: 4xx Client Error
Common causes
Frequently asked questions
451 belongs to the 4xx Client Error class and is generally not cached for long; behavior is controlled by Cache-Control.
4xx Client Error: The resource is unavailable for legal reasons, such as a takedown order.
Sources & standards
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Related status codes