234.121.192.in-addr.arpa is delegated to three nameservers, however all three delegated nameservers are missing in the zone. All of them are on different IP networks. nif.se, nll.se, dfr.se, eva.fi, sbc.se and at least 69 other hosts share nameservers with this domain. se.234.121.192.in-addr.arpa are subdomains to this hostname. 121.192.in-addr.arpa is a domain controlled by five nameservers. All of them are on different IP networks.