ahlta.csd.disa.mil is a domain controlled by three nameservers. Two of them are on the same IP network. eb.mil, ces.mil, afms.mil, mtmc.gov, cert.mil and at least 30 other hosts share nameservers with this domain. phrprod.ahlta.csd.disa.mil are subdomains to this hostname. csd.disa.mil is a domain controlled by three nameservers at csd.disa.mil themselves. All of them are on different IP networks. Incoming mail for csd.disa.mil is handled by two mailservers also at csd.disa.mil. They are on different IP networks.