ns4.cap.gov has one IP number , but the reverse is dns2.nettica.com. ns2.00.com, ns2.dns.im, ns3.jump.biz, ns3.jump.net, dns2.hikt.no and at least 100 other hosts point to the same IP. cap.gov use this as a nameserver. cap.gov is a domain controlled by four nameservers at cap.gov themselves. All of them are on different IP networks. Incoming mail for cap.gov is handled by six mailservers having a total of 19 IP numbers. Two mailservers have the same IP number. Some of them are on the same IP network. cap.gov has one IP number. ns4.cap.gov is hosted on a server in United States.