HTTP response status codes

https://developer.mozilla.org/en-US/docs/Web/HTTP/Status

1. Informational responses (100 – 199)
2. Successful responses (200 – 299)
3. Redirection responses (300 – 399)
4. Client error responses (400 – 499)
5. Server error responses (500 – 599)

The status codes are defined by RFC 9110