go
ns2.subsys.net has one IP number , but the reverse is server3.subsys.no. ns3.subsys.no, ns2.subsys.no, ns3.subsys.net and server3.subsys.no point to the same IP. m4tv.com, syse.com, tuxic.net, svolk.net, nuffe.net and at least 100 other hosts use this as a nameserver. subsys.net is a domain controlled by two nameservers at subsys.net themselves. They are on different IP networks. Incoming mail for subsys.net is handled by one mailserver at subsys.no. subsys.net has one IP number. ns2.subsys.net is hosted on a server in United States.

ns2.subsys.net
a records
 
+ 209.20.80.91 209.20.64.0/19 AS12200 server3.subsys.no
+ --- server3.subsys.no

*.subsys.net
a records
 
+ 85.19.71.167 85.19.0.0/16 AS3292  
+ ---  

subsys.net
a records
 
+ 85.19.71.167 85.19.0.0/16 AS3292  
+ ---  
ns-soa records
ns1.subsys.net
+ 85.19.71.162 85.19.0.0/16 AS3292 server4.subsys.no
+ --- server4.subsys.no
ns records
ns1.subsys.net
+ 85.19.71.162 85.19.0.0/16 AS3292 server4.subsys.no
+ --- server4.subsys.no
ns2.subsys.net
+ 209.20.80.91 209.20.64.0/19 AS12200 server3.subsys.no
+ --- server3.subsys.no
mx records
server4.subsys.no
+ 85.19.71.162 85.19.0.0/16 AS3292 -
+ --- -
ip numbers of host
209.20.80.91
ptrs of ip numbers
server3.subsys.no
hostnames sharing ip with a-records
ns2.subsys.no
ns3.subsys.net
ns3.subsys.no
server3.subsys.no
domains using this as nameserver
a-unit.com
acimsvg.com
akselhansen.net
albatross-ohoi.net
andreasandersen.net
aolresearch.org
aoluniversity.org
ark98.com
artoflivingresearch.org
atharonrpg.com
bleedingedges.com
chopperclub-norway.com
citahagen.com
cre8studio.net
darkdeeds.net
daudur.com
dinmaler.net
dj-erlendl.com
djdontomaso.com
ecalision.com
einarsen.net
eksplisitt.net
elmannen.net
essemeff.com
filmantrop.net
filmfokus.net
finnmarksfluer.net
flyfokus.net
forsaken-lands.net
fossefallet.net
fotofokus.net
frode-marit.net
funkyplumbo.com
gameinsiders.net
gangso.net
garborg.net
giltvedt.net
gjerull.net
grasmyr.net
grimholt.net
haarstad.net
hunting-pride.com
ianbel.com
ipcomics.net
itas-no.com
japansk-spisshund.net
kammermusikk.net
kardemommehuset.com
kevinjh.net
kimjoar.net
kriik.com
kuntigi.net
lars-olsen.net
lifefrombelow.com
linrk.net
lundtveit.net
m4tv.com
matsj.net
midling.net
mikaelaanestad.com
mikkeline.net
museumsafe.net
ngrenland.net
nirvananorge.com
nodenet.com
norplatoon.net
nortabs.net
norwaynature.com
norwegianpirates.net
nuffe.net
odderikr.net
olabil.net
opensource-notebook.com
partytelt.net
photomodel.com
pondus.net
propellerforum.net
ravnanger.net
rent-a-wreck.dk
rogalandfk.com
roskva.net
runarolsen.net
sentrumkirken.net
seven-music.com
sickel.net
signalfestival.net
skandinavisk-bureau.com
skartland.net
skattenett.com
skriblerier.net
sladris.com
smarksofnorway.net
sommerfjosbakken.net
songcans.com
stakland.com
subsys.net
sundetwestern.com
svalbardflora.net
svolk.net
syse.com
talbotlago.com
teamgym.net
tetova.net
the-boogiemen-inc.com
trebaat.net
trondsaether.com
tuxic.net
tylden.net
ulvefaret.net
unbornchikken.com
vardar-eurus.com
vedde.net
veidahl.net
vipriko.com
xantofyll.com
xn--hkon-qoa.com
xn--ljlauget-i0a.net
xn--trebt-pra.net
zapffe.com
zealousmind.com
domains using this as nameserver under another name
5min.no
apeland.no
artofliving.no
bitforbit.no
bjornar.no
byggkeramikkforeningen.no
colosseumklinikken.no
difsoftware.com
framnes.vgs.no
imagasin.no
jantzen.no
japanphoto.no
kjemi.no
knappenforeningen.no
kreft06.no
langegaarden.no
nettintro.no
nir.no
pmedia.no
qts.no
residence.no
rushprint.no
scooternorge.no
sendmelding.no
servicenett.no
skipsrevyen.no
subsys.no
tromsoby.no
upn.no
vaj.no
xantofyll.com
yeye.no
domains using this as mailserver under another name
albatross-ohoi.net
aolresearch.org
aoluniversity.org
elmannen.net
forsaken-lands.net
fossefallet.net
frode-marit.net
giltvedt.net
grasmyr.net
grimholt.net
imagasin.no
kevinjh.net
kjemi.no
kreft06.no
kuntigi.net
lars-olsen.net
lundtveit.net
matsj.net
norplatoon.net
opensource-notebook.com
pmedia.no
pondus.net
propellerforum.net
roskva.net
scooternorge.no
skriblerier.net
svolk.net
tetova.net
trebaat.net
vedde.net
xn--ljlauget-i0a.net
used as nameserver but missing in zone
flatpedal.org
fleinvaer.com
mariehenriksen.net
trondergolf.org