go
ns1.sun.com has one IP number , but the reverse is cltea-ns-1.sun.com. ns1.eu.sun.com and cltea-ns-1.sun.com point to the same IP. sun.be, sun.de, sun.es, sun.fr, sun.cl and at least 100 other hosts use this as a nameserver. sun.com is a domain controlled by four nameservers at sun.com themselves. All of them are on different IP networks. Incoming mail for sun.com is handled by four mailservers having a total of six IP numbers. Some of them are on the same IP network. sun.com has one IP number. ns1.sun.com is hosted on a server in United States.

ns1.sun.com
a records
 
+ 192.18.128.11 192.18.128.0/20 AS6142 cltea-ns-1.sun.com
+ --- cltea-ns-1.sun.com

sun.com
a records
 
+ 72.5.124.61 72.5.112.0/20 AS14743  
+ ---  
ns-soa records
ns1.sun.com
+ 192.18.128.11 192.18.128.0/20 AS6142 cltea-ns-1.sun.com
+ --- cltea-ns-1.sun.com
ns records
ns1.sun.com
+ 192.18.128.11 192.18.128.0/20 AS6142 cltea-ns-1.sun.com
+ --- cltea-ns-1.sun.com
ns2.sun.com
+ 192.18.99.5 192.18.96.0/20 AS11479 brm-ea-ns-1.sun.com
+ --- brm-ea-ns-1.sun.com
ns8.sun.com
+ 192.18.43.12 192.18.43.0/24 AS90 scaea-ns-1.sun.com
+ --- scaea-ns-1.sun.com
ns3.sun.com
+ 192.18.4.206 192.18.0.0/20 AS12866 gmp-ea-ns-1.sun.com
+ --- gmp-ea-ns-1.sun.com
mx records
mx3.sun.com
+ 192.18.98.31 192.18.96.0/20 AS11479 brmea-mail-1.sun.com
+ --- brmea-mail-1.sun.com
+ 192.18.98.43 192.18.96.0/20 AS11479 brmea-mail-2.sun.com
+ --- brmea-mail-2.sun.com
mx4.sun.com
+ 192.18.98.34 192.18.96.0/20 AS11479 brmea-mail-3.sun.com
+ --- brmea-mail-3.sun.com
+ 192.18.98.36 192.18.96.0/20 AS11479 brmea-mail-4.sun.com
+ --- brmea-mail-4.sun.com
btmx4.sun.com
+ 192.5.209.6 192.5.209.0/24 AS78 relay4i.sun.com
+ --- relay4i.sun.com
btmx6.sun.com
+ 129.179.7.132 129.179.0.0/16 AS78 -
+ --- -
ip numbers of host
192.18.128.11
ptrs of ip numbers
cltea-ns-1.sun.com
hostnames sharing ip with a-records
cltea-ns-1.sun.com
ns1.eu.sun.com
domains using this as nameserver
108.18.192.in-addr.arpa
128.18.192.in-addr.arpa
226.18.192.in-addr.arpa
43.18.192.in-addr.arpa
97.18.192.in-addr.arpa
98.18.192.in-addr.arpa
99.18.192.in-addr.arpa
aduva.com
aduva.net
azad.ac.ir
bigtape.net
chilisoft.com
chilisoft.net
clusterfs.com
clustra.net
e-storagetek.net
e-stortek.net
e-tapelibrary.net
e611.net
ems.sun.com
estortek.net
etapelibrary.net
eu.sun.com
forte.com
getdisk.net
gettape.net
glassfish.net
gotdisk.net
gotsan.net
gotstorage.net
gridware.net
iforce.net
infomadepowerful.net
innotek-gmbh.de
innotek.de
iplanet.com
java.com
javaone.net
javasoft.com
jcp.org
jinione.net
killerstorage.net
linuxqa.net
lustre.org
mark.sunedu.com
mysql.com
mysql.de
mysql.se
mystoragetek.net
mysun.net
netbeans.com
netbeans.info
netbeans.net
netdynamics.net
networkstorage.net
networkstoredge.net
nt-disk.net
nt-raid.net
ntdisk.net
ntraid.net
openprovisioning.com
opensolaris.org
pr.sun.com
san-now.net
sannow.net
savaje.com
savedby.net
savedon.net
savedondisk.net
savedonstoragetek.net
savedontape.net
scottmcnealy.com
seebeyond.com
snapshot-copy.net
snapshotcopy.net
solarisone.net
srswan.net
stardiv.de
staroffice.de
stc.com
storability.net
storageareanetwork.net
storageareanetworks.net
storageforsale.net
storageintl.net
storagenet.net
storagenetworking.net
storagepower.net
storagetek-disk.net
storagetekdisk.net
storageteksun-alliance.net
sun-creator.net
sun-startup.net
sun.be
sun.ca
sun.cl
sun.com
sun.com.br
sun.de
sun.es
sun.fr
sun.net
sun411.net
suncreator.net
sunedu.com
sunmicrosystems.com.br
sunmicrosystems.org
sunsite.net
sunstartup.net
sunstoredge.net
sunviet.com.vn
superstorage.net
tarantella.com
unix-raid.net
unix-storage.net
unixraid.net
unixstorage.net
usec.sun.com
vaau.com
virtual-volumes.net
domains using this as nameserver under another name
i-planet.com
intelligentstoredge.com
intelligentstoredge.net
iplanet.com
jiro.com
solaris.com
srsnetconnect.com
sun-brands.com
sun-brands.net
sun-marketplace.com
sun-marketplace.net
sun-radio.com
sun-radio.net
sun-store.com
sun-store.net
sun.ca
sun.es
sun.ua
suncreator.com
sunedu.com
sunmarketplace.com
sunmarketplace.net
werethedot.com
used as nameserver but missing in parent delegation
afara.net
azad.ac.ir
iplanet.com
jiro.com
srsnetconnect.com
stardiv.de
staroffice.de
sun.ca
sun.co.uk
sun.com.tw
sun.es
sun.ua
sundatacenter.com
sunedu.com
sunmicrosystems.com.br
sunmicrosystems.lu
used as nameserver but missing in zone
7space.net
aduva.net
clocktowernet.net
e611.net
eservicedesk.net
glassfish.net
iforce.net
isopia.net
javafeed.net
javafeeds.net
javatone.net
jinione.net
learntone.net
linuxqa.net
networkstoredge.net
openprovisioning.com
opensolaris.net
openwebserver.org
projectsilverlining.org
solarisone.net
srswan.net
storability.net
sun-creator.net
sun-startup.net
suncobalt.net
suncreator.net
sunjava.com
sunsite.net
sunsourcecode.net
sunsourcenetwork.net
sunsourcering.net
sunstoredge.net
sunviet.com.vn
sunxvmserver.org