79.22.209.in-addr.arpa is delegated to four nameservers, however three extra nameservers are listed in the zone. All nameservers are at disa.mil. Two of them are on the same IP network. ia.mil, jsc.mil, disa.mil, ncr.disa.mil, fhu.disa.mil and at least 26 other hosts share nameservers with this domain. 22.209.in-addr.arpa is a domain controlled by six nameservers at nipr.mil. All of them are on different IP networks.