go
se-dns.svl.netnod.se has one IP number , which also has a corresponding reverse pointer. c.ns.se point to the same IP. se-dns.svl.netnod.se is hosted on a server in Sweden.

se-dns.svl.netnod.se
a records
 
+ 192.36.135.107 192.36.135.0/24 AS8674 -
+ --- -
ip numbers of host
192.36.135.107
ptrs of ip numbers
se-dns.svl.netnod.se
ip numbers using ptr to this host
192.36.135.107
hostnames sharing ip with a-records
c.ns.se
domains using this as nameserver under another name
se