23.92.62.in-addr.arpa is a domain controlled by two nameservers at nextra.no. They are on the same IP network. op.no, ssd.no, smf.no, rpt.no, anf.no and at least 92 other hosts share nameservers with this domain. 92.62.in-addr.arpa is a domain controlled by three nameservers. Two of them are on the same IP network.