We pick c.root-servers.net, one of the 13 root servers (1), and ask it about h.meissner.it and learn that it is delegated to six name servers (2), so we ask c.dns.it where we learn that meissner.it is delegated to two name servers, including ns1.meissner.it (3), so we ask that one and learn that h.meissner.it is delegated to two name servers (4), so we ask ns8.meissner.it and get the following answer:
Three of them point only to the IP number 85.10.249.122.
The two name servers ns7 and ns8.meissner.it together
There are five domains that use name server group 1.
Four of those use only the mail server tls.meissner.it. Worth noting is that all of the domains that only use the mail server tls.meissner.it use name server group 1.
Three of them point only to the IP number 85.10.249.122. Worth noting is that three of the host names that point only to the IP number 85.10.249.122 use name server group 1.
One of them point only to the IP number 85.10.249.114.
There are four domains that only use the mail server tls.meissner.it.
All of those use name server group 1. Worth noting is that four of the domains that use name server group 1 use only the mail server tls.meissner.it.
Three of them point only to the IP number 85.10.249.122. Worth noting is that three of the host names that point only to the IP number 85.10.249.122 use only the mail server tls.meissner.it.
The mail server tls.meissner.it
There are four domains that use the mail server tls.meissner.it.
Three of them point only to the IP number 85.10.249.122.
The IP number 85.10.249.122 only
There are eight host names that point only to the IP number 85.10.249.122.
Three of those use name server group 1. Worth noting is that three of the domains that use name server group 1 point only to the IP number 85.10.249.122.
Three of them use only the mail server tls.meissner.it. Worth noting is that three of the domains that only use the mail server tls.meissner.it point only to the IP number 85.10.249.122.