yahoo.in.com has one IP number , which is the same as for in.com. in.com, qc.in.com, go.in.com, smt.in.com, ibm.in.com and at least 76 other hosts point to the same IP. www.yahoo.in.com are subdomains to this hostname. in.com is a domain controlled by three nameservers at in.com themselves. All of them are on the same IP network. Incoming mail for in.com is handled by two mailservers also at in.com. They are on the same IP network. yahoo.in.com is hosted on a server in India.