421 Misdirected Request
Wrong house, mate.
What it properly means
The request went to a server that cannot produce a response for that combination of scheme and authority.
- Class
- 4xx Client error: you fucked up
- Defined in
- RFC 9110, section 15.5.20
Get one yourself
This endpoint really answers with 421. Point your client at it and see what it does.
curl -i https://httpcodes.dev/api/421