83.42.69.in-addr.arpa is delegated to two nameservers, however both delegated nameservers are missing in the zone and two other nameservers are listed instead. There are two duplicated IP numbers. Some of them are on the same IP network. ckg.pl, metart.li, uksmut.com, webair.net, interxs.nl and at least 55 other hosts share nameservers with this domain.