ns2.secondary.com has one IP number , which also has a corresponding reverse pointer. d.ns.const.org and ns3.quintagroup.com point to the same IP. citr.ca, ngh.net, lxs.net, pacu.biz, idsk.net and at least 100 other hosts use this as a nameserver. secondary.com is delegated to four nameservers, however two delegated nameservers are missing in the zone and four other nameservers are listed. All of them are on different IP networks. Incoming mail for secondary.com is handled by three mailservers. All of them are on different IP networks. secondary.com has one IP number. ns2.secondary.com is hosted on a server in United States.