What does below output on a Windows, MacOS or Linux box?
nslookup <KNOWN_DHCP_CLIENT_IP> <DHCP_DNS_SERVER_IP>
For you <DHCP_DNS_SERVER_IP> is most likely your router IPv4 address.
Eg:
$ nslookup 10.0.0.234 10.0.0.2
234.0.0.10.in-addr.arpa name = hak01.home.dehakkelaar.nl.
Have you setup shop according to below?
Some "Router setup" examples below: