We pick d.root-servers.net, one of the 13 root servers (1), and ask it about f.is and learn that is is delegated to seven name servers (2), so we ask sns-pb.isc.org where we learn that f.is is delegated to three name servers, including ns1.backbone.is (3), so we ask that one and get the following answer:
F.is is a domain controlled by three domain name servers at fink.org and backbone.is having a total of nine IP numbers. Some of them are on the same IP network. Incoming mail for f.is is handled by one mail server at fink.org.
One quarter of them use only the mail server ns1.fink.org.
The three name servers ns1.backbone.is, ns2.backbone.is and ns1.fink.org together
There are about sixty domains that use name server group 1.
One quarter of those use only the mail server ns1.fink.org. Worth noting is that all of the domains that only use the mail server ns1.fink.org use name server group 1.
Four of them point to IP group 1. Worth noting is that four of the host names that point to IP group 1 use name server group 1.
The mail server ns1.fink.org only
All of the 15 domains that only use the mail server ns1.fink.org use name server group 1. Worth noting is that one quarter of the domains that use name server group 1 use only the mail server ns1.fink.org.
The mail server ns1.fink.org
There are 15 domains that use the mail server ns1.fink.org.
All of those use only the mail server ns1.fink.org.
All of them use name server group 1.
The IP number 85.195.195.132
There are eight host names that point to the IP number 85.195.195.132.
The four IP numbers 2001:4b28:1:12:230:48ff:fe7f:44ca, 2001:4b28:1:13:230:48ff:fe7f:44cb, 85.195.194…
Four of the eight host names that point to IP group 1 use name server group 1. Worth noting is that four of the domains that use name server group 1 point to IP group 1.
