go
www.yahoo.ro has one IP number , via cname to rc.yahoo.com , but the reverse is w2.rc.vip.re4.yahoo.com. av.com, yehoo.nl, yahoo.pk, yahoo.sg, yimg.com and at least 100 other hosts point to the same IP. yahoo.ro is a domain controlled by five nameservers at yahoo.com. All of them are on different IP networks. Incoming mail for yahoo.ro is handled by eight mailservers at mx.mail.yahoo.com. Some of them are on the same IP network. yahoo.ro has two IP numbers. They are on different IP networks. www.yahoo.ro is hosted on a server in United States even though the hostname implies Romania.

www.yahoo.ro
cname records
rc.yahoo.com
+ 206.190.60.37 206.190.32.0/19 AS14779 w2.rc.vip.re4.yahoo.com
+ --- w2.rc.vip.re4.yahoo.com

*.yahoo.ro
a records
 
+ 206.190.60.37 206.190.32.0/19 AS14779 w2.rc.vip.re4.yahoo.com
+ --- w2.rc.vip.re4.yahoo.com

yahoo.ro
a records
 
+ 68.180.206.184 68.180.192.0/20 AS36752  
+ ---  
+ 206.190.60.37 206.190.32.0/19 AS14779 w2.rc.vip.re4.yahoo.com
+ --- w2.rc.vip.re4.yahoo.com
ns-soa records
 
+   AS?  
+ ---  
ns records
ns1.yahoo.com
+ 68.180.131.16 68.180.131.0/24 AS10880 -
+ --- -
ns2.yahoo.com
+ 68.142.255.16 68.142.255.0/24 AS7280 -
ns3.yahoo.com
+ 121.101.152.99 121.101.152.0/23 AS23879 -
ns4.yahoo.com
+ 68.142.196.63 68.142.192.0/19 AS14780 -
ns5.yahoo.com
+ 119.160.247.124 119.160.240.0/20 AS10229 -
mx records
a.mx.mail.yahoo.com
+ 67.195.168.31 67.195.160.0/19 AS14778 mta-v1.mail.vip.ac4.yahoo.com
+ --- mta-v1.mail.vip.ac4.yahoo.com
b.mx.mail.yahoo.com
+ 74.6.136.65 74.6.128.0/20 AS14777 mta-v1.mail.vip.sk1.yahoo.com
+ --- mta-v1.mail.vip.sk1.yahoo.com
c.mx.mail.yahoo.com
+ 206.190.54.127 206.190.32.0/19 AS14779 mta-v1.mail.vip.re4.yahoo.com
+ --- mta-v1.mail.vip.re4.yahoo.com
d.mx.mail.yahoo.com
+ 209.191.88.254 209.191.64.0/18 AS14780 mta-v1.mail.vip.mud.yahoo.com
+ --- mta-v1.mail.vip.mud.yahoo.com
e.mx.mail.yahoo.com
+ 67.195.168.230 67.195.160.0/19 AS14778 mta-v2.mail.vip.ac4.yahoo.com
+ --- mta-v2.mail.vip.ac4.yahoo.com
f.mx.mail.yahoo.com
+ 98.137.54.237 98.137.32.0/19 AS36752 mta-v1.mail.vip.sp2.yahoo.com
+ --- mta-v1.mail.vip.sp2.yahoo.com
g.mx.mail.yahoo.com
+ 98.137.54.238 98.137.32.0/19 AS36752 mta-v2.mail.vip.sp2.yahoo.com
+ --- mta-v2.mail.vip.sp2.yahoo.com
h.mx.mail.yahoo.com
+ 66.94.236.34 66.94.232.0/21 AS14780 mta-v2.mail.vip.mud.yahoo.com
+ --- mta-v2.mail.vip.mud.yahoo.com
IP numbers of host
206.190.60.37
PTRs of IP numbers
w2.rc.vip.re4.yahoo.com
Host names sharing IP with A records
account-of-yahoo.net
addressbookyahoo.com
adultyahoobriefcases.com
ahoo-inc.info
ahoo.com
ahoomito.com
ahoos.com
ahoosex.com
albertayahoo.com
albumyahoo.com
altavista.be
altavista.com
altavista.de
altavista.fr
altavistaeurope.org
altlvista.com
altrvista.com
antispyyahoo.com
aolcommoinyahoocom.com
asiachatyahoo.com
astrologyyahoo.com
autogroupsyahoo.com
av.com
bcst.yahoo.com
bigleaguers.yahoo.com
bigsaleyahoo.com
billiardsyahoo.com
billpay.yahoo.com
blog.flickr.com
brgrupsyahoo.com
briefcasemailyahoo.com
broadcastmanager.biz
broadcastplanet.net
bthyahoo.com
buscaryahoo.com
buysbcyahoomodem.com
cardgameyahooinfo.com
cgi-yahoo.com
chatcomyahoo.com
chatenespanolyahoo.com
chatespanolyahoo.com
chatpunteryahoo.com
chatyahooclosed.com
chemyahoo.com
chinseyahoo.com
comwwyahoo.com
comyahoo.com
corporateyahoo.info
cpmyahoo.com
crawl.yahoo.net
createyahooemailaccounts.com
dailynewsyahoo.com
deleteyahoomail.com
desktop.yahoo.com
dk.news.yahoo.com
downloadipsnifferforyahoomessenger.com
dslsbcyahoo.com
dslyahool.com
egreetingyahoo.com
egropes.com
eliyahoo.com
esponalyahoo.com
flickr.biz
flickyahoo.biz
freeyahoogreeting.com
geociyiesyahoo.com
goyahoo.com
hj.scd.yahoo.com
hoomu.com
hosted-on-rc.yahoo.com
hsbcpostalesyahoo.com
indextools.com
ird.yahoo.com
koehler29i29yahoo.com
mail.yahoo.co.kr
mail.yahoo88.com
mailyahoo.net
mboxyahoo.com
musicmatch.com
mybloglog.com
myyahoo.com
pacbell.yahoo.com
platinumyahoo.biz
premiumservices.yahoo.com
rc.yahoo.akadns.net
rc.yahoo.com
re2.yahoo.com
resolver.net
rocketmail.com
sdv.yahoo.com
singtonesyahoo.com
tpe.yahoo.com
ukl.yahoo.com
updates.mail.yahoo.com
vip1a.yehoo.nl
wap.yahoo.com.au
www.login.yahoo.com
www.yahomail.com
www.yahoo.co.kr
www.yahoo.com.bd
wwwyahoo.com
yahomail.com
yahoo-inc.com
yahoo.ac
yahoo.bg
yahoo.ca
yahoo.co.id
yahoo.co.kr
yahoo.com.bd
yahoo.hu
yahoo.net
yahoo.pk
yahoo.sg
yahooadultgroup.com
yahooligans.com
yahoomai.com
yahoomail.com
yahoopoolcheat.com
yahootogo.com
yehoo.nl
yimg.com
CNAME
rc.yahoo.com