ns2.cwo.com has one IP number , which also has a corresponding reverse pointer. n2r.net, m1b.com, rph.net, rcj.net, rsf.net and at least 100 other hosts use this as a nameserver. cwo.com is a domain controlled by two nameservers at cwo.com themselves. They are on the same IP network. Incoming mail for cwo.com is handled by one mailserver also at cwo.com. cwo.com has one IP number. ns2.cwo.com is hosted on a server in United States.