go
mail.ndmail.ca has one IP number , which also has a corresponding reverse pointer. mx1.ndmail.ca and smtp.ndmail.ca point to the same IP. machinedoctorsinc.com use this as a mailserver. ndmail.ca is a domain controlled by three nameservers at ndhost.ca. All of them are on different IP networks. Incoming mail for ndmail.ca is handled by two mailservers at ndmail.ca themselves. They are on different IP networks. mail.ndmail.ca is hosted on a server in Canada.

mail.ndmail.ca
a records
 
+ 216.8.176.98 216.8.176.0/23 AS13727 -
+ --- -

ndmail.ca
ns-soa records
ns1.ndhost.ca
+ 216.8.176.114 216.8.176.0/23 AS13727 ptr-216-8-176-114.ptr.nextdimensioninc.com
+ --- ptr-216-8-176-114.ptr.nextdimensioninc.com
ns records
ns1.ndhost.ca
+ 216.8.176.114 216.8.176.0/23 AS13727 ptr-216-8-176-114.ptr.nextdimensioninc.com
+ --- ptr-216-8-176-114.ptr.nextdimensioninc.com
ns2.ndhost.ca
+ 64.66.238.254 64.66.224.0/20 AS15127  
+ ---  
ns3.ndhost.ca
+ 206.130.11.196 206.130.11.0/24 AS30645 aeyrn.ndmail.ca
+ --- aeyrn.ndmail.ca
mx records
mx1.ndmail.ca
+ 216.8.176.98 216.8.176.0/23 AS13727 mail.ndmail.ca
+ --- mail.ndmail.ca
mx2.ndmail.ca
+ 206.130.11.196 206.130.11.0/24 AS30645 aeyrn.ndmail.ca
+ --- aeyrn.ndmail.ca
ip numbers of host
216.8.176.98
ptrs of ip numbers
mail.ndmail.ca
ip numbers using ptr to this host
216.8.176.98
hostnames sharing ip with a-records
mx1.ndmail.ca
smtp.ndmail.ca
domains using this as mailserver
machinedoctorsinc.com
domains using this as mailserver under another name
actsadvantage.com
adamandlinda.com
advancebusiness.net
andrewandstacey.com
awesomesmile.com
bargainannex.com
beadresort.com
cabotoclub.com
cannauto.com
cannauto.net
cannautobg.com
cavaliertool.com
cheneylake.com
comtechgroup.com
detroitglobal.com
electromac.com
fastpark.net
gfxltd.com
gfxtrucks.com
gundrilling.ca
heartlandcommunitycu.on.ca
highlinemushrooms.com
iandf.com
kowalsky.net
lakeshorestandrews.net
lsachurch.net
mezzalunadesigns.net
mpmarine.com
mri-toronto.com
namedrive.co.uk
namedrive.com
namedrive.de
namedrive.net
namedrive.pl
namedrive.ru
ndhost.ca
ndmail.ca
ndparking.com
ndparking.de
northwayexecutive.com
northwayrentals.com
ntepperman.com
optoconcepts.com
pmotspc.com
privateexchange.com
redoefixtures.com
redoemold.com
swooper.com
tarahall.net
tepperman.com
teppermans.com
teppermansfurniture.com
tgigroup.com
thecomtechgroup.com
thecomtechgroup.net
thekirkwoodgroup.com
tryadvantage.com
uccul.com
windsorlife.com
windsoryachtclub.com
xen3.com