Summary
messenger.yahoo.com has one IP number , via cname to
messenger.fy.b.yahoo.com , but the reverse is
myc1.msg.vip.re2.yahoo.com.
pager.yahoo.com,
us.messenger.yahoo.com,
mx.messenger.yahoo.com,
dk.messenger.yahoo.com,
au.messenger.yahoo.com and at least six other hosts cnames to this hostname.
jpager.yahoo.com,
messenger.yahoo.akadns.net,
myc1.msg.vip.re2.yahoo.com and
crw27.vc.search.re2.yahoo.com point to the same IP.
us.messenger.yahoo.com,
tw.messenger.yahoo.com,
mx.messenger.yahoo.com,
dk.messenger.yahoo.com,
au.messenger.yahoo.com and at least 17 other hosts are subdomains to this hostname.
yahoo.com is a domain controlled by five nameservers at
yahoo.com themselves. All of them are on different IP networks. Incoming mail for
yahoo.com is handled by six mailservers having a total of ten IP numbers. Some of them are on the same IP network.
yahoo.com has three IP numbers. All of them are on different IP networks.
messenger.yahoo.com is hosted on a server in United States.