go
rc.yahoo.com has one IP number , via cname to rc.fy.b.yahoo.com , but the reverse is w2.rc.vip.re4.yahoo.com. www.av.com, www.yahoo.ro, www.yahoo.hk, www.yahoo.sk, www.yahoo.cz and at least 100 other hosts cnames to this hostname. av.com, yehoo.nl, yahoo.pk, yahoo.sg, yimg.com and at least 100 other hosts point to the same IP. au.rc.yahoo.com, tw.rc.yahoo.com, nz.rc.yahoo.com, eur.rc.yahoo.com and search.rc.yahoo.com are subdomains to this hostname. yahoo.com is delegated to five nameservers, however two extra nameservers are listed in the zone. All nameservers are 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 eight 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. rc.yahoo.com is hosted on a server in United States.

rc.yahoo.com
cname records
rc.fy.b.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.com
a records
 
+ 69.147.114.224 69.147.96.0/19 AS14779  
+ ---  
+ 209.131.36.159 209.131.32.0/20 AS36752  
+ 209.191.93.53 209.191.64.0/18 AS14780  
ns-soa records
ns1.yahoo.com
+ 68.180.131.16 68.180.131.0/24 AS10880 -
+ --- -
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 -
ns8.yahoo.com
+ 202.165.104.22 202.165.104.0/22 AS10228 -
ns6.yahoo.com
+ 202.43.223.170 202.43.220.0/22 AS18293 -
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
+ 66.196.82.7 66.196.80.0/21 AS14779 mta-v15.mail.vip.re1.yahoo.com
+ --- mta-v15.mail.vip.re1.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
+ 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
ip numbers of host
206.190.60.37
ptrs of ip numbers
w2.rc.vip.re4.yahoo.com
hostnames sharing ip with a-records
a1yahooautopartsrus.com
aageocities.com
account-of-yahoo.net
accountcheckemailsyahoo.com
accountcreateemailsyahoo.com
accountemailsnewopenyahoo.com
accountemailssetupyahoo.com
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
bigsaleyahoo.com
billiardsyahoo.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
downloadipsnifferforyahoomessenger.com
dslsbcyahoo.com
dslyahool.com
egropes.com
eliyahoo.com
esponalyahoo.com
flickr.biz
flickyahoo.biz
freeyahoogreeting.com
geociyiesyahoo.com
goyahoo.com
hj.scd.yahoo.com
hoomu.com
hsbcpostalesyahoo.com
indextools.com
ird.yahoo.com
koehler29i29yahoo.com
mailyahoo.net
mboxyahoo.com
mybloglog.com
myyahoo.com
platinumyahoo.biz
premiumservices.yahoo.com
rc.yahoo.akadns.net
re2.yahoo.com
resolver.net
rocketmail.com
sdv.yahoo.com
singtonesyahoo.com
tpe.yahoo.com
ukl.yahoo.com
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
yahootogo.com
yehoo.nl
yimg.com
cname
rc.fy.b.yahoo.com
hostnames pointing here by cname
-29569.yahoo-inc.com
123948-app1.yahoo-inc.com
123949-app2.yahoo-inc.com
360.yahoo.com
affiliate.altavista.com
amdard.eduwww.yahomail.com
angry.pixoria.com
auctions.shopping.yahoo.com
auctions.yahoo.com
auto.yahoo.com
ayhooo.ayhooo.ayhooo.com
ayhooo.ayhooo.com
bigleaguers.yahoo.com
billpay.yahoo.com
blog.flickr.com
bouncer1.gh.vip.dcn.yahoo-inc.com
broadband.yahoo.com
ca.buzz.yahoo.com
calendars.yahoo.com
career.yahoo.com
celebrities.yahoo.com
cgi.simplenet.net
chinese.address.yahoo.com
chinese.mail.yahoo.com
classifieds.yahoo.com
computers.yahoo.com
comwww.yahomail.com
correo.espanol.yahoo.com
correo.yahoo.com
cranky.pixoria.com
dcn.yahoo-inc.com
de.photos.yahoo.com
displaced.pixoria.com
disruption.pixoria.com
dk.news.yahoo.com
eduwww.yahomail.com
event-gw.simplenet.net
features.yahoo.com
fifa.yahoo.com
francais.yahoo.ca
headlines.yahoo.com
homer.hmweb.com
hosted-on-rc.yahoo.com
httpwww.yahoo.com
image.altavista.com
image.yahoo.com
korea.yahoo.com
lo0.muc.yahoo-inc.com
mail.yahoo.ca
mail.yahoo.co.in
mail.yahoo.co.kr
mail.yahoo.com.br
mail.yahoo.fr
mail.yahoo88.com
mail.yahoocasino.net
muc.yahoo-inc.com
new.domains.yahoo.com
norton.domains.yahoo.com
ns.onesearch.com
ns1.ayhooo.com
ns2.av-yahoo.com
ns2.ayhooo.com
nyc.yahoo.com
ops.yahoo.com
pacbell.yahoo.com
parks.yahoo.com
pg.photos.yahoo.com
photos.yahoo.com
search.dk.altavista.com
servers.yahoo.com
shop.corp.yahoo.com
shop.yahoo.com
shopping.altavista.com
sms.yahoo.com
snow.yahoo.com
solutions.altavista.com
telemundo.yahoo.com
uk.personals.yahoo.com
updates.mail.yahoo.com
urchin.simplenet.net
vip1a.altavista.nl
vip1a.yaahoo.nl
wap.yahoo.com.au
webhost02.simplenet.net
webhost03.simplenet.net
www.altavista.ch
www.altavista.nl
www.amdard.eduwww.yahomail.com
www.av.com
www.geocties.com
www.groups.yahoo.com
www.in.yahoo.com
www.iresumix.com
www.login.yahoo.com
www.mail.yahoo.com
www.maps.yahoo.com
www.statalabs.com
www.submit-register-yahoo.com
www.www.yahoo.com
www.yahomail.com
www.yahoo.co.id
www.yahoo.co.kr
www.yahoo.co.za
www.yahoo.com.bd
www.yahoo.com.es
www.yahoo.com.sg
www.yahoo.cz
www.yahoo.hk
www.yahoo.ro
www.yahoo.ru
www.yahoo.sk
www.yahooauto.com
www.yahoocade.com.br
www.yahooligans.com
www.yahoomail.com
www.yahoomail.de
www.yahowww.yahomail.com
yahoo.comyahoo.com
yahoomail.comwww.yahomail.com
yahowww.yahomail.com
domains using this as mailserver under another name
bilingovasolutions.com
subdomains
au.rc.yahoo.com
eur.rc.yahoo.com
nz.rc.yahoo.com
search.rc.yahoo.com
tw.rc.yahoo.com
nameservers missing in parent delegation
ns6.yahoo.com
ns8.yahoo.com