go
viamail.a2zshow.com has one IP number , but no corresponding reverse pointer. mail.ntda.org, mail.yuken.us, mail.tbesc.com, mail.outcomz.com, mail.pdactive.net and at least 19 other hosts point to the same IP. a2zshow.com is a domain controlled by two nameservers at rackspace.com. They are on different IP networks. Incoming mail for a2zshow.com is handled by two mailservers at emailsrvr.com. They are on different IP networks. a2zshow.com has one IP number. viamail.a2zshow.com is hosted on a server in United States.

viamail.a2zshow.com
a records
 
+ 66.155.127.7 66.155.64.0/18 AS11532 ded-mail1.imconline.net
+ --- ded-mail1.imconline.net
+ --- mail.internet-dns.com

a2zshow.com
a records
 
+ 72.32.27.117 72.32.0.0/16 AS33070  
+ ---  
ns-soa records
ns.rackspace.com
+ 69.20.95.4 69.20.95.0/24 AS15395 -
+ --- -
ns records
ns.rackspace.com
+ 69.20.95.4 69.20.95.0/24 AS15395 -
+ --- -
ns2.rackspace.com
+ 65.61.188.4 65.61.188.0/24 AS15395 -
mx records
mx1.emailsrvr.com
+ 72.4.117.21 72.4.112.0/20 AS27357 -
+ --- -
mx2.emailsrvr.com
+ 98.129.185.4 98.129.0.0/16 AS33070 -
ip numbers of host
66.155.127.7
ptrs of ip numbers
ded-mail1.imconline.net
mail.internet-dns.com
hostnames sharing ip with a-records
ded-mail1.imconline.net
mail.atsadmin.com
mail.automationstore.com
mail.event-wizard.com
mail.gadogadointernational.com
mail.greenmindtechnologies.com
mail.in-the-money.com
mail.internet-dns.com
mail.labelengraving.com
mail.lamontcollection.co.uk
mail.ntda.org
mail.outcomz.com
mail.pdactive.net
mail.pressmairusa.com
mail.riversidetowerhotel.com
mail.schickshavelab.com
mail.southerncoats.com
mail.superskinmd.com
mail.superskinstore.com
mail.tbesc.com
mail.tinseltown.tv
mail.yuken.us
viamail.a2zinc.net
worldparadigmshift.com
domains using this as mailserver under another name
automationstore.com
execsearches.com
gadogadointernational.com
gmac-real-estate.com
greenmindtechnologies.com
htshipping.com
internet-dns.com
labelengraving.com
lamontcollection.co.uk
outcomz.com
pdactive.net
superskinmd.com
tbesc.com
themeasurementgroup.com
ticketvision.com
vansonleather.net
vansonleathers.com
visionaryrock.com