go
nsit.garr.net has one IP number , which also has a corresponding reverse pointer. r.dns.it point to the same IP. garr.net is a domain controlled by two nameservers at garr.net themselves. They are on the same IP network. Incoming mail for garr.net is handled by two mailservers at dir.garr.it. Two mailservers have the same IP number. nsit.garr.net is hosted on a server in Italy.

nsit.garr.net
a records
 
+ 193.206.141.46 193.206.0.0/16 AS137 -
+ --- -

garr.net
ns-soa records
ns1.garr.net
+ 193.206.141.38 193.206.0.0/16 AS137 -
+ --- -
ns records
ns1.garr.net
+ 193.206.141.38 193.206.0.0/16 AS137 -
+ --- -
ns2.garr.net
+ 193.206.141.42 193.206.0.0/16 AS137 -
mx records
lx8.dir.garr.it
+   AS?  
+ ---  
lx9.dir.garr.it
+   AS?  
ip numbers of host
193.206.141.46
ptrs of ip numbers
nsit.garr.net
ip numbers using ptr to this host
193.206.141.46
hostnames sharing ip with a-records
r.dns.it
domains using this as nameserver under another name
g8university.com
it
nic.it