1.181.193.in-addr.arpa is a domain controlled by three nameservers. Two nameservers have the same IP number. They are on the same IP network. lfv.se, ssab.se, atss.se, daloc.se, ports.se and at least 40 other hosts share nameservers with this domain. 181.193.in-addr.arpa is a domain controlled by five nameservers. All of them are on different IP networks.