90.71.192.in-addr.arpa is a domain controlled by two nameservers at telia.com. They are on the same IP network. bof.se, afr.se, age.se, awl.fi, bpc.se and at least 56 other hosts share nameservers with this domain. 71.192.in-addr.arpa is a domain controlled by five nameservers. All of them are on different IP networks.