go
www.tv3.ir has one IP number. iribtv.ir, www.tv5.ir, www.tv4.ir, www.tv1.ir, www.tvr.ir and at least five other hosts point to the same IP. tv3.ir is delegated to two nameservers, however both delegated nameservers are missing in the zone and one other nameserver is listed. There are two duplicated IP numbers. www.tv3.ir is hosted on a server in Iran.

www.tv3.ir
a records
 
+ 62.220.120.45 62.220.120.0/23 AS21341  
+ ---  

tv3.ir
ns-soa records
a.ns.tv3.ir
+ 62.220.119.35 62.220.119.0/24 AS21341 ns1.irib.com
+ --- ns1.irib.com
ns records
a.ns.tv3.ir
+ 62.220.119.35 62.220.119.0/24 AS21341 ns1.irib.com
+ --- ns1.irib.com
a.ns.iribtv.ir
+ 62.220.119.35 62.220.119.0/24 AS21341 ns1.irib.com
ns1.irib.ir
+ 62.220.119.35 62.220.119.0/24 AS21341 ns1.irib.com
ip numbers of host
62.220.120.45
hostnames sharing ip with a-records
ch1.iribtv.ir
cinema1.iribtv.ir
iribtv.ir
tv2.irib.ir
www.iribtv.ir
www.tv1.ir
www.tv2.ir
www.tv4.ir
www.tv5.ir
www.tvr.ir
nameservers missing in parent delegation
a.ns.tv3.ir
nameservers missing in zone
a.ns.iribtv.ir
ns1.irib.ir