dns2.greensoft.com has one IP number , which also has a corresponding reverse pointer. kac.org, ajax.se, kalo.com, fotb.net, aaro.net and at least 100 other hosts use this as a nameserver. greensoft.com is a domain controlled by two nameservers at greensoft.com themselves. They are on different IP networks. Incoming mail for greensoft.com is handled by four mailservers. All of them are on the same IP network. greensoft.com has one IP number. dns2.greensoft.com is hosted on a server in United States.