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