We pick d.root-servers.net, one of the 13 root servers (1), and ask it about peri.ma and learn that ma is delegated to six name servers (2), so we ask dns.inria.fr where we learn that peri.ma is delegated to two name servers, including srv1-peri.ma (3), so we ask that one and get the following answer:
Peri.ma is a domain controlled by four domain name servers at nstld.com. There are two duplicated IP numbers. Both are on different IP networks. Incoming mail for peri.ma is handled by two mail servers at peri.de. Both are on different IP networks. Peri.ma has one IP number (80.244.215.181), but the reverse is ?.
Three of them point to the IP number 80.244.215.181. Worth noting is that three of the host names that point to the IP number 80.244.215.181 use the mail server mail2.peri.de.
The seven name servers a4, f4, g4, h4, j4, k4 and l4.nstld.com together
A third of the several thousand of domains that use the seven name servers a4, f4, g4, h4, j4, k4 and l4.nstld.com together, hereafter referred to as "name server group 2", point only to the IP number 69.58.181.114 (example: pat.tv, gbt.tv and mrk.tv ).
The name server l4.nstld.com
There are several thousand of domains that use the name server l4.nstld.com.