We pick h.root-servers.net, one of the 13 root servers (1), and ask it about razeni.md and learn that md is delegated to six name servers (2), so we ask ns-ext.isc.org where we learn that razeni.md is delegated to two name servers, including ns2.host-md.net (3), so we ask that one and get the following answer:
Razeni.md is a domain controlled by two domain name servers at host-md.net having a total of four IP numbers. Some of them are on the same IP network. Incoming mail for razeni.md is handled by one mail server at razeni.md themselves having a total of two IP numbers. Both are on different IP networks. Razeni.md has two IP numbers (220.127.116.11, 2a02:fd0:4:1::27). Both are on different IP networks.