We pick f.root-servers.net, one of the 13 root servers (1), and ask it about www.cl and learn that cl is delegated to six name servers (2), so we ask a.nic.cl where we learn that www.cl is delegated to two name servers, including ns12.1-19.net (3), so we ask that one and get the following answer:
A third of the more than two hundred host names that point only to the IP number 50.22.192.212 use name server group 1 (example: html.cl, 1-17.net and sitio.cl ). Worth noting is that all of the domains that use name server group 1 point only to the IP number 50.22.192.212.
The name server ns1.1-17.net
There are about ninety domains that use the name server ns1.1-17.net.
The two name servers ns1.1-17.net and ns12.1-19.net together
All of the about ninety domains that use name server group 1 point only to the IP number 50.22.192.212 (example: sitios.cl, 9.cl and 7.cl ). Worth noting is that a third of the host names that point only to the IP number 50.22.192.212 use name server group 1.