I was curious as to how many yahoo.com variations were out there. I used the whois utility, which is an Internet user name directory service, to ascertain that information.
# whois yahoo.com
Whois Server Version 1.X
Domain names in the .com and .net domains can now be registered
with many different competing registrars. Go to http://www.internic.net
for detailed information.
YAHOO.COM.ZZZZZZ.MORE.INFO.AT.WWW.BEYONDWHOIS.COM
YAHOO.COM.ZZZZZ.GET.LAID.AT.WWW.SWINGINGCOMMUNITY.COM
YAHOO.COM.ZOMBIED.AND.HACKED.BY.WWW.WEB-HACK.COM
YAHOO.COM.VN
YAHOO.COM.VIRGINCHASSIS.COM
YAHOO.COM.UNIQUELYUJEWELS.COM
YAHOO.COM.TWIXTEARS.COM
YAHOO.COM.TW
YAHOO.COM.SG
YAHOO.COM.OPTIONSCORNER.COM
YAHOO.COM.MX
YAHOO.COM.MORE.INFO.AT.WWW.BEYONDWHOIS.COM
YAHOO.COM.JOSEJO.COM
YAHOO.COM.JENNINGSASSOCIATES.NET
YAHOO.COM.IS.N0T.AS.1337.AS.SEARCH.GULLI.COM
YAHOO.COM.HK
YAHOO.COM.ELPOV.COM
YAHOO.COM.DALLARIVA.COM
YAHOO.COM.BR
YAHOO.COM.BGPETERSON.COM
YAHOO.COM.AU
YAHOO.COM
The registry database contains only .COM, .NET, .EDU domains and
registrars.