150.236.83.in-addr.arpa is a domain controlled by two nameservers on different IP networks. ksb.de, ksb.se, ksb.ru, vva.de, dphv.de and at least 58 other hosts share nameservers with this domain. 236.83.in-addr.arpa is a domain controlled by three nameservers. Two of them are on the same IP network.