go
ns2.yahoo.com has one IP number , which also has a corresponding reverse pointer. av.com, who.com, icio.us, yahoo.pk, yimg.com and at least 100 other hosts use this as a nameserver. 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. ns2.yahoo.com is hosted on a server in United States.

ns2.yahoo.com
a records
 
+ 68.142.255.16 68.142.255.0/24 AS7280 -
+ --- -

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
68.142.255.16
ptrs of ip numbers
ns2.yahoo.com
ip numbers using ptr to this host
68.142.255.16
domains using this as nameserver
101.196.66.in-addr.arpa
102.30.72.in-addr.arpa
104.165.202.in-addr.arpa
111.252.216.in-addr.arpa
113.28.67.in-addr.arpa
123.196.66.in-addr.arpa
124.109.216.in-addr.arpa
125.196.66.in-addr.arpa
126.196.66.in-addr.arpa
131.6.74.in-addr.arpa
136.157.64.in-addr.arpa
137.157.64.in-addr.arpa
161.152.200.in-addr.arpa
161.163.66.in-addr.arpa
168.73.209.in-addr.arpa
170.73.209.in-addr.arpa
176.160.202.in-addr.arpa
180.160.202.in-addr.arpa
187.73.209.in-addr.arpa
196.142.68.in-addr.arpa
197.250.63.in-addr.arpa
199.250.63.in-addr.arpa
200.43.202.in-addr.arpa
203.250.63.in-addr.arpa
204.136.216.in-addr.arpa
204.250.63.in-addr.arpa
207.250.63.in-addr.arpa
208.250.63.in-addr.arpa
210.250.63.in-addr.arpa
211.250.63.in-addr.arpa
215.30.72.in-addr.arpa
229.94.66.in-addr.arpa
234.142.68.in-addr.arpa
234.94.66.in-addr.arpa
240.209.203.in-addr.arpa
249.142.68.in-addr.arpa
251.142.68.in-addr.arpa
255.142.68.in-addr.arpa
3.12.217.in-addr.arpa
30.72.in-addr.arpa
4.12.217.in-addr.arpa
53.190.206.in-addr.arpa
6.74.in-addr.arpa
65.218.66.in-addr.arpa
65.6.74.in-addr.arpa
70.218.66.in-addr.arpa
71.218.66.in-addr.arpa
72.6.74.in-addr.arpa
75.147.69.in-addr.arpa
79.58.64.in-addr.arpa
86.218.66.in-addr.arpa
87.191.209.in-addr.arpa
91.196.66.in-addr.arpa
97.196.66.in-addr.arpa
98.115.216.in-addr.arpa
a2s.yahoo.com
ac2.yahoo.com
accountcheckemailsyahoo.com
adinterax.com
ahoo-inc.info
altavista.com
altavista.de
altavista.fr
altavistaeurope.org
astrologyyahoo.com
av.com
broadcastplanet.net
calendar.yahoo.com
cardgameyahooinfo.com
chatpunteryahoo.com
chatyahooclosed.com
comwwyahoo.com
corp.ukl.yahoo.com
crawl.yahoo.net
createyahooemailaccounts.com
del.icio.us
flickr.com
geocities.com
goyahoo.com
hotprize.com
icio.us
indextools.com
inktomi.com
inktomisearch.com
ird.yahoo.com
koehler29i29yahoo.com
krx.yahoo.com
mud.yahoo.com
premiumservices.yahoo.com
prideinpleasure.com
re1.yahoo.com
re2.yahoo.com
re3.yahoo.com
re4.yahoo.com
resolver.net
rightmedia.com
rightmedia.net
rightmediaexchange.com
rmxads.com
sc8.yahoo.com
sk1.yahoo.com
sp1.yahoo.com
store.yahoo.com
ukl.yahoo.com
who.com
yahomail.com
yahoo.bg
yahoo.co.id
yahoo.co.kr
yahoo.com
yahoo.com.bd
yahoo.es
yahoo.hu
yahoo.net
yahoo.pk
yahooligans.com
yahoomail.com
yieldmanager.com
yimg.com
ysm.yahoo.com
nameservers missing in parent delegation
ns6.yahoo.com
ns8.yahoo.com
used as nameserver but missing in parent delegation
altavista.am
altavista.cl
altavista.dk
bia2bnd.info
chemyahoo.com
dotmusic.co.uk
gamesdomain.com
geocities.ca
mapsyahoo.net
onesearch.com
wwwyohoo.com
yahhomail.com
yahoo-inc.se
yahoo.am
yahoo.as
yahoo.bi
yahoo.cc
yahoo.cl
yahoo.co.id
yahoo.co.in
yahoo.co.kr
yahoo.co.th
yahoo.co.tt
yahoo.com.co
yahoo.com.hk
yahoo.com.ly
yahoo.com.ph
yahoo.com.pk
yahoo.com.tr
yahoo.dk
yahoo.dm
yahoo.gl
yahoo.je
yahoo.kr
yahoo.kz
yahoo.ly
yahoo.ph
yahoo.sn
yahoomail.co.nz
yahoomail.co.uk
yahoosports.com
yooho.com
ypn.se
used as nameserver but missing in zone
12dailyclicks.com
139.98.in-addr.arpa
1trail.com
aboutyahoo.com
alohabowl.net
blogsport.com
bluelace2uyahoo.net
candidatetracker.net
coches-nuevos-yahoo.net
collegecheerleader.net
compoundcap.net
crick3t.net
darkyahoo.net
dpsconsultants.net
egyyahoo.net
godawgs.net
googalia.com
gorivals.net
honarmandan.org
hyahoo.net
impactgyms.net
joomlafacile.com
matnai1901.net
mixd.net
mumbai.yahoo.com
nameservers01.com
nelouisiana.net
nezzwerk.net
noroton.net
persianyahoo.com
prideinpleasure.com
proyahoo.net
quantumrevelations.net
rahesabz.com
ricardovieira.net
rivalhigh.net
rivalnetworks.net
rivals100.net
rivals100recruiting.net
rivalscampus.net
rivalsgear.net
rivalshi.net
rivalshoops.net
rivalstv.net
rivalsuniversity.net
rivels.com
rokhsefat.net
surprisechef.com.au
tanyahoo.net
techster.net
terra-yahoo.net
terrayahoo.net
texasfootball.net
thebigorange.net
tightcamjeans.com
underconstruczion.net
voiceyahoo.com
weboloji.com
wespoke.com
wwwyahoomail.com
y-dns.com
yahhoo.com
yahoadmfirewll.net
yahoo-anonymous.net
yahoo-cheats.net
yahoo-delinquents.net
yahoo-terra.net
yahoo-web.com
yahoo.gr
yahoobooter.net
yahooclubs.net
yahooemail.com
yahoolagian.com
yahoomail.co.id
yahoomailcom.com
yahoomexico.com
yahooracing.com