go
c.ns.se and se-dns.svl.netnod.se point to 192.36.135.107.

c.ns.se
a records
 
+ 192.36.135.107 192.36.135.0/24 AS8674 se-dns.svl.netnod.se
+ --- se-dns.svl.netnod.se

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
hostnames sharing ip with a-records
c.ns.se
se-dns.svl.netnod.se
domains using this as nameserver
se