451 Unavailable For Legal Reasons
4xx Client Error
RFC 7725
This content can't be shown here, by law.
What 451 Unavailable For Legal Reasons means {#what}
The server is legally prohibited from serving this content to the requester — government censorship, court orders, copyright law, etc. The code is a reference to Ray Bradbury’s Fahrenheit 451. The response should, when possible, include a Link header pointing to an explanation.
When you’ll see a 451 {#when}
- Content blocked in specific countries by legal order
- GDPR-related content removal
- Copyright takedown requests
When to use 451 {#use}
- Use instead of 403 when the reason is specifically legal
- Include as much detail as legally permissible in the response