go
postini.com.s8b2.psmtp.com has one IP number , but the reverse is s8a1.psmtp.com. ca.s8a1.psmtp.com, nl.s8a1.psmtp.com, net.s8a1.psmtp.com, org.s8a1.psmtp.com, aon.ca.s8a1.psmtp.com and at least 100 other hosts point to the same IP. psmtp.com, postini.com, postini.co.uk and postinicorp.com use this as a mailserver. com.s8b2.psmtp.com has one IP number. postini.com.s8b2.psmtp.com is hosted on a server in United States.

postini.com.s8b2.psmtp.com
a records
 
+ 64.18.7.10 64.18.7.0/24 AS26910 s8a1.psmtp.com
+ --- s8a1.psmtp.com

*.com.s8b2.psmtp.com
a records
 
+ 64.18.7.14 64.18.7.0/24 AS26910  
+ ---  

com.s8b2.psmtp.com
a records
 
+ 64.18.7.14 64.18.7.0/24 AS26910  
+ ---  
ip numbers of host
64.18.7.10
ptrs of ip numbers
s8a1.psmtp.com
hostnames sharing ip with a-records
abcdistributing.com.s8a1.psmtp.com
abcdistributing.net.s8a1.psmtp.com
advsol.com.s8a1.psmtp.com
aon.ca.s8a1.psmtp.com
aoninternational.com.s8a1.psmtp.com
arthritis-research.com.s8a1.psmtp.com
autismspeaks.org.s8a1.psmtp.com
bellinghamherald.com.s8a1.psmtp.com
bgrdc.com.s8a1.psmtp.com
biddefordsavings.com.s8a1.psmtp.com
biomedcentral.com.s8a1.psmtp.com
biomedical-engineering-online.com.s8a1.psmtp.com
biomedscientistjobs.com.s8a1.psmtp.com
bnd.com.s8a1.psmtp.com
bradenton.com.s8a1.psmtp.com
breast-cancer-research.com.s8a1.psmtp.com
bts.com.s8a1.psmtp.com
ca.s8a1.psmtp.com
ccforum.com.s8a1.psmtp.com
centredaily.com.s8a1.psmtp.com
charlotte.com.s8a1.psmtp.com
charlotteobserver.com.s8a1.psmtp.com
chemdist.com.s8a1.psmtp.com
clearlink.com.s8a1.psmtp.com
computerlaw.com.s8a1.psmtp.com
connect-assuradeuren.nl.s8a1.psmtp.com
controlled-trials.com.s8a1.psmtp.com
dallas.com.s8a1.psmtp.com
dillon.ca.s8a1.psmtp.com
eighty20.com.s8a1.psmtp.com
eloqua.com.s8a1.psmtp.com
expertprotocols.com.s8a1.psmtp.com
f1000biology.com.s8a1.psmtp.com
faber.nl.s8a1.psmtp.com
feedster.com.s8a1.psmtp.com
fei.org.s8a1.psmtp.com
forbes.com.s8a1.psmtp.com
forbesbest.com.s8a1.psmtp.com
gangel.com.s8a1.psmtp.com
gbtitle.com.s8a1.psmtp.com
generalcatalyst.com.s8a1.psmtp.com
genomebiology.com.s8a1.psmtp.com
greysheet.com.s8a1.psmtp.com
gzo.com.s8a1.psmtp.com
herald.com.s8a1.psmtp.com
highlanderllc.com.s8a1.psmtp.com
idahostatesman.com.s8a1.psmtp.com
idealsupply.com.s8a1.psmtp.com
intraware.com.s8a1.psmtp.com
isp.ca.s8a1.psmtp.com
jmedicalcasereports.com.s8a1.psmtp.com
kansas.com.s8a1.psmtp.com
kansascity.com.s8a1.psmtp.com
kbhome.com.s8a1.psmtp.com
kbhomes.com.s8a1.psmtp.com
kennedy-center.org.s8a1.psmtp.com
keynoter.com.s8a1.psmtp.com
knight-ridder.com.s8a1.psmtp.com
kri.com.s8a1.psmtp.com
lakesprecision.com.s8a1.psmtp.com
ledger-enquirer.com.s8a1.psmtp.com
leonardgreen.com.s8a1.psmtp.com
macon.com.s8a1.psmtp.com
macontel.com.s8a1.psmtp.com
magma.ca.s8a1.psmtp.com
magmacom.com.s8a1.psmtp.com
maidenbaum.com.s8a1.psmtp.com
mcclatchydc.com.s8a1.psmtp.com
mfp.org.s8a1.psmtp.com
mfpfs.com.s8a1.psmtp.com
miami.com.s8a1.psmtp.com
miamiadschool.com.s8a1.psmtp.com
mipps.net.s8a1.psmtp.com
missionfoods.com.s8a1.psmtp.com
mkmv.com.s8a1.psmtp.com
mssg.com.s8a1.psmtp.com
net.s8a1.psmtp.com
netvigour.com.s8a1.psmtp.com
new-science-press.com.s8a1.psmtp.com
newegg.com.s8a1.psmtp.com
nl.s8a1.psmtp.com
obsmtp.com.s8a1.psmtp.com
obsmtp.com.s8a2.psmtp.com
obsmtp.com.s8b1.psmtp.com
obsmtp.com.s8b2.psmtp.com
openaccesscentral.com.s8a1.psmtp.com
orbimage.com.s8a1.psmtp.com
oreck.com.s8a1.psmtp.com
org.s8a1.psmtp.com
ovisboske.com.s8a1.psmtp.com
ozment.com.s8a1.psmtp.com
ozzo.com.s8a1.psmtp.com
pancap.com.s8a1.psmtp.com
patchlink.com.s8a1.psmtp.com
philly.com.s8a1.psmtp.com
phillymarketplace.com.s8a1.psmtp.com
phillynews.com.s8a1.psmtp.com
primus.ca.s8a1.psmtp.com
realcities.com.s8a1.psmtp.com
realtyinfocenter.com.s8a1.psmtp.com
realtyinfocentre.com.s8a1.psmtp.com
riverbankinc.com.s8a1.psmtp.com
sciencenow.com.s8a1.psmtp.com
servicechannel.com.s8a1.psmtp.com
sharebuilder.com.s8a1.psmtp.com
soros.com.s8a1.psmtp.com
sterlingstatebank.com.s8a1.psmtp.com
stertil.nl.s8a1.psmtp.com
sunherald.com.s8a1.psmtp.com
targetsite.com.s8a1.psmtp.com
thatsracin.com.s8a1.psmtp.com
trialdogs.net.s8a1.psmtp.com
vcoinc.com.s8a1.psmtp.com
vel.net.s8a1.psmtp.com
domains using this as mailserver
postini.co.uk
postini.com
postinicorp.com
psmtp.com
domains using this as mailserver under another name
aon.ca
charlotte.com
dillon.ca
magma.ca
primus.ca