We pick i.root-servers.net, one of the 13 root servers (1), and ask it about april-assurances.ma and learn that ma is delegated to six name servers (2), so we ask ns2.nic.fr where we learn that april-assurances.ma is delegated to two name servers, including srv2-april-assurances.ma (3), so we ask that one and get the following answer:
Most of the several thousand of domains that use the name server k4.nstld.com use the seven name servers a4, f4, g4, h4, j4, k4 and l4.nstld.com together, hereafter referred to as "name server group 1", (example: isi.tv, wlr.tv and ffo.tv ).
The IP number 203.27.227.220 only
There are several thousand of host names that point only to the IP number 203.27.227.220.
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 name server group 1 point only to the IP number 69.58.181.114 (example: rtd.tv, ltx.tv and ohb.tv ).
The four name servers a4, f4, g4 and l4.nstld.com together
There are several thousand of domains that use name server group 2.