We pick f.root-servers.net, one of the 13 root servers (1), and ask it about l.mu and learn that mu is delegated to four name servers (2), so we ask udns1.tld.mu where we learn that l.mu is delegated to two name servers, including ns2.mailart.com (3), so we ask that one and get the following answer:
L.mu is a domain controlled by two domain name servers at mailart.com. Both are on the same IP network. Incoming mail for l.mu is handled by one mail server at l.mu themselves. L.mu has one IP number (180.42.26.116), but the reverse is ?.
A third of them use the two name servers ns2 and ns3.mailart.com together, hereafter referred to as "name server group 1", (example: hayama.st, 80.st and h.kz ).
The two name servers ns2 and ns3.mailart.com together
There are several hundred of domains that use name server group 1.
Most of those point only to the IP number 180.42.26.116 (example: 33.kg, mail.io and abarth.cx ). Worth noting is that a third of the host names that point only to the IP number 180.42.26.116 use name server group 1.
There are almost a thousands host names that point only to the IP number 180.42.26.116.
A third of those use name server group 1 (example: jaguar.cx, drink.cx and aaa.ms ). Worth noting is that most of the domains that use name server group 1 point only to the IP number 180.42.26.116.
Nine of them use only the mail server mail.w.mw (example: w.mw ).
