183.83.146.in-addr.arpa is a domain controlled by four nameservers. All of them are on different IP networks. ok.cl, oz.au, rp.cl, org.ar, iws.cl and at least 47 other hosts share nameservers with this domain. cl.183.83.146.in-addr.arpa are subdomains to this hostname. 83.146.in-addr.arpa is delegated to two nameservers, however two extra nameservers are listed in the zone. Two nameservers have the same IP number. Two of them are on the same IP network.