We pick k.root-servers.net, one of the 13 root servers (1), and ask it about calarasi.md and learn that md is delegated to six name servers (2), so we ask md.cctld.authdns.ripe.net where we learn that calarasi.md is delegated to two name servers, including ns1.host-md.net (3), so we ask that one and get the following answer:
Calarasi.md is a domain controlled by two domain name servers at host-md.net having a total of two IP numbers. Some of them are on the same IP network. We are missing the IP:s of two servers: ns2.host-md.net and ns1.host-md.net. Incoming mail for calarasi.md is handled by one mail server at calarasi.md themselves having a total of one IP number. We are missing the IP:s of one server: mail.calarasi.md. Calarasi.md has one IP number (217.26.147.23), but the reverse is ns3.host-md.net. We are missing the IP:s of one server: .
All of the several hundred of domains that use the primary name server ns1.host-md.net use name server group 1 (example: interior.md, eurohouse.md and maxnet.md ). Worth noting is that all of the domains that use name server group 1 use the primary name server ns1.host-md.net.
The two name servers ns1 and ns2.host-md.net together
There are several hundred of domains that use name server group 1.