0.38.158.in-addr.arpa is a domain controlled by three nameservers. Two of them are on the same IP network. uio.no, mork.no, abm-u.no, eunet.no, ndgf.org and at least 68 other hosts share nameservers with this domain. 38.158.in-addr.arpa is a domain controlled by three nameservers. All of them are on different IP networks.