ns3.vsnl.com has one IP number , which also has a corresponding reverse pointer. eth.net, vsnl.in, vsnl.com, vsnl.net, npcil.com and at least 100 other hosts use this as a nameserver. vsnl.com is a domain controlled by two nameservers on different IP networks. Incoming mail for vsnl.com is handled by three mailservers at vsnl.net. All of them are on the same IP network. vsnl.com has one IP number. ns3.vsnl.com is hosted on a server in India.