It only sees the "last hop" of recursive DNS resolution [1]. If you have internal DNS servers, you would need to run a copy of which-dns internally, and your i

It only sees the "last hop" of recursive DNS resolution [1]. If you have internal DNS servers, you would need to run a copy of which-dns internally, and your internal DNS servers would need have the which-dns entries added. If you want to see if a local workstation is pointing to a different public/external DNS server than the rest of your network, it should work. [1] https://www.cloudflare.com/learning/dns/what-is-recursive-dns/ https://www.cloudflare.com/learning/dns/what-is-recursive-dn...