ns2.cucbc.com has one IP number , which also has a corresponding reverse pointer. cccu.ca, cua.com, wscu.com, cdcu.com, mscu.com and at least 100 other hosts use this as a nameserver. cucbc.com is a domain controlled by three nameservers at cucbc.com themselves. Two of them are on the same IP network. Incoming mail for cucbc.com is handled by two mailservers at central1.com. They are on different IP networks. cucbc.com has one IP number. ns2.cucbc.com is hosted on a server in Canada.