ns1.perimeterusa.com has one IP number. cnb3.com, cnb2.com, ftub.com, cnb1.com, dcsb.net and at least 100 other hosts use this as a nameserver. perimeterusa.com is delegated to two nameservers, however one delegated nameserver is missing in the zone and two other nameservers are listed. Two nameservers have the same IP number. All of them are on the same IP network. Incoming mail for perimeterusa.com is handled by two mailservers on the same IP network. perimeterusa.com has one IP number. ns1.perimeterusa.com is hosted on a server in United States.