78.253.145.in-addr.arpa is a domain controlled by three nameservers at arcor-ip.de. All of them are on the same IP network. iad.de, filge.de, lwk-nds.de, germany.net, arcor-ip.de and at least 37 other hosts share nameservers with this domain. 253.145.in-addr.arpa is delegated to four nameservers, however one delegated nameserver is missing in the zone. All nameservers are also at arcor-ip.de. Two nameservers have the same IP number. Some of them are on the same IP network.