ns2.dpnet.com has one IP number , which also has a corresponding reverse pointer. on.com, rk.com, sbw.com, rktv.com, papi.com and at least 100 other hosts use this as a nameserver. dpnet.com is a domain controlled by four nameservers at dpnet.com themselves. Some of them are on the same IP network. Incoming mail for dpnet.com is handled by two mailservers also at dpnet.com. They are on the same IP network. dpnet.com has one IP number , but the reverse is vmail1.dpnet.com. ns2.dpnet.com is hosted on a server in United States.