We pick i.root-servers.net, one of the 13 root servers (1), and ask it about it.keyence.de and learn that de is delegated to six name servers (2), so we ask a.nic.de where we learn that keyence.de is delegated to two name servers, including ns2.region-s.com (3), so we ask that one and get the following answer:
One of them point only to the IP number 62.225.122.7.
One of them point only to the IP number 202.218.33.7.
One of them use name server group 2.
The IP number 62.225.122.7 only
One of the three host names that point only to the IP number 62.225.122.7 use mail server group 1. Worth noting is that one of the domains that use mail server group 1 point only to the IP number 62.225.122.7.
The IP number 62.180.24.90
All of the one host names that point to the IP number 62.180.24.90 point only to that ip number.
All of them point only to the IP number 62.225.122.7.
All of them use name server group 1.
The two mail servers mail and mail2.it.keyence.de together
There are two domains that use mail server group 1.
One of those point only to the IP number 62.225.122.7. Worth noting is that one of the host names that point only to the IP number 62.225.122.7 use mail server group 1.
One of them point only to the IP number 202.218.33.7.
The name server root.it.keyence.de
All of the one domains that use the name server root.it.keyence.de use name server group 1.
The IP number 178.15.31.12
All of the one host names that point to the IP number 178.15.31.12 point only to that ip number (example: ns2.it.keyence.de ).
The two name servers ns2 and root.it.keyence.de together
All of the one domains that use name server group 1 use mail server group 1. Worth noting is that one of the domains that use mail server group 1 use name server group 1.
