go
mx00.1and1.fr has four IP numbers. All of them are on the same IP network. mx.1and1.fr, mx02.1and1.fr, mx01.1and1.fr, mx.schlund.de, mx01.1and1.es and at least 42 other hosts point to the same IP. 1pa.com, adis.fr, ceta.fr, gepro.fr, ajlt.com and at least 100 other hosts use this as a mailserver. 1and1.fr is a domain controlled by two nameservers at 1and1.fr themselves. They are on the same IP network. Incoming mail for 1and1.fr is handled by three mailservers at schlund.de. All of them are on the same IP network. 1and1.fr has one IP number. mx00.1and1.fr is hosted on four servers in Germany even though the hostname implies France.

mx00.1and1.fr
a records
 
+ 212.227.15.134 212.227.0.0/16 AS8560 mx-b.kundenserver.de
+ --- mx-b.kundenserver.de
+ 212.227.15.150 212.227.0.0/16 AS8560 mx-b.kundenserver.de
+ 212.227.15.169 212.227.0.0/16 AS8560 mx-b.kundenserver.de
+ 212.227.15.186 212.227.0.0/16 AS8560 mx-b.kundenserver.de

1and1.fr
a records
 
+ 212.227.126.71 212.227.0.0/16 AS8560  
+ ---  
ns-soa records
nsa.schlund.de
+ 195.20.224.98 195.20.224.0/19 AS8560 -
+ --- -
ns records
nsa.1and1.fr
+ 195.20.224.98 195.20.224.0/19 AS8560 nsa.schlund.de
+ --- nsa.schlund.de
nsa2.1and1.fr
+ 195.20.244.5 195.20.224.0/19 AS8560 nsa2.schlund.de
+ --- nsa2.schlund.de
mx records
mxintern0.schlund.de
+ 212.227.126.201 212.227.0.0/16 AS8560 mxintern.schlund.de
+ --- mxintern.schlund.de
mxintern1.schlund.de
+ 212.227.126.204 212.227.0.0/16 AS8560 mxintern.schlund.de
mxintern2.schlund.de
+ 212.227.126.205 212.227.0.0/16 AS8560 mxintern.schlund.de
ip numbers of host
212.227.15.134
212.227.15.150
212.227.15.169
212.227.15.186
ptrs of ip numbers
mx-b.kundenserver.de
hostnames sharing ip with a-records
mail.accidont.co.uk
mail.intendance.com
mail.makoni.com
mail.oliy.co.uk
mail.roytheboy.com
mail.securesharepoint.net
mail.securevirtualoffice.com
mail.tullamoredew.de
mail.uk-irc.net
mail.usgmbh.de
mail01.securesharepoint.net
mail2.accidont.co.uk
mail2.intendance.com
mail2.lightcomputers.com
mail2.makoni.com
mail2.roytheboy.com
mail2.thepcoutlet.co.uk
mail3.lightcomputers.com
mail3.thepcoutlet.co.uk
mx-b.kundenserver.de
mx.1and1.co.uk
mx.1and1.fr
mx.kundenserver.de
mx.schlund.de
mx00.1and1.co.uk
mx00.1and1.es
mx00.komm-kolleg.com
mx00.kundenserver.de
mx00.oneandone.co.uk
mx00.schlund.com
mx00.schlund.de
mx01.1and1.co.uk
mx01.1and1.es
mx01.1and1.fr
mx01.komm-kolleg.com
mx01.kundenserver.de
mx01.oneandone.co.uk
mx01.schlund.com
mx01.schlund.de
mx02.1and1.co.uk
mx02.1and1.fr
mx02.kundenserver.de
mx02.schlund.de
mx1.cacweb.org
mx10.isp-net.de
mxi00.1und1.com
mxi01.1und1.com
domains using this as nameserver under another name
frenchhousesale.co.uk
kineticselfdefence.com
domains using this as mailserver
01geek.com
1net4.com
1pa.com
adis.fr
adomicilementvotre.com
agapefrance.org
agence-valras.fr
air-pegasus.com
ajlt.com
akuter.com
alborane.com
aldeiadomar.tur.br
alisoa.com
aloalo.fr
alpes-informatique.fr
annonces-cote-azur.com
artnum.com
asieco.com
atelier-alternet.org
backup.zeshell.org
bastilledelaunay-paris-hotel.com
batiweb.com
batiweb.fr
be-bing.com
boulangerieberaud.com
bourgognextra.com
brasseursdusornin.com
campings-infrankrijk.com
carburant.fr
cc-duchanois.fr
cedimes.org
ceta.fr
christiane-valejo.com
ckom-conseil.com
cottagebise.com
coutaubegarie.com
cybermotard.com
dessaigne.fr
dev.zyyne.com
diezline.com
duanrevig.com
e-fr.com
ecuries-du-bonheur.com
else-automation.com
eventsoft.fr
expression-metaphorique.com
fabienmarquet.com
fredautoecole.info
fsfrance.com
gepro.fr
grrrndzero.org
gtwfrance.com
hotmixradio.fr
hotmixradio.hotmixradio.com
huile-cactus.com
johnpaul.com
k-airsport.com
lachartreuse.net
lafourmipau64.fr
lecomtedemontecristo.com
lightcone.org
luberonconstruction.fr
macserver.net
maissi.fr
manzanet.org
marbrerie.info
mx.inform.fr
mx1.sollyazar.com
my-intranet.com
nel57.com
onsoku.net
ooclick.com
paris-hotel-launay.com
recettes-zen.com
rexclub.com
s141882002.onlinehome.fr
s142426488.onlinehome.fr
s143471981.onlinehome.fr
s143522950.onlinehome.fr
s148776067.onlinehome.fr
s151578802.onlinehome.fr
s151662950.onlinehome.fr
s151685738.onlinehome.fr
s153769603.onlinehome.fr
s157615534.onlinehome.fr
s159630110.onlinehome.fr
s162139644.onlinehome.fr
s163374565.onlinehome.fr
s163648364.onlinehome.fr
s164247212.onlinehome.fr
s166081522.onlinehome.fr
s176392005.onlinehome.fr
s180481561.onlinehome.fr
s181040150.onlinehome.fr
s181745268.onlinehome.fr
s182134994.onlinehome.fr
s183135399.onlinehome.fr
s184217625.onlinehome.fr
s184217836.onlinehome.fr
s184220586.onlinehome.fr
s184232100.onlinehome.fr
s187020233.onlinehome.fr
s189364245.onlinehome.fr
s190351096.onlinehome.fr
s190358312.onlinehome.fr
s194331621.onlinehome.fr
s195729451.onlinehome.fr
s211555854.onlinehome.fr
s211933376.onlinehome.fr
s211963129.onlinehome.fr
sanelec.fr
srid.com
sysexpert.fr
tourisme-nautique.net
troyes-restaurant.com
troyeshotelreservation.com
web-locations-vacances.com
webcar.fr
www.manzanet.org
zeshell.org
domains using this as mailserver under another name
aatime.com
act-zeltner.de
asktheworld.info
hotelamsterdam.de
intertranet.net
k-med.co.uk
kkag.com
mck-music.com
nezzovision.de
pureserver.info
roytheboy.com
securesharepoint.net
soft-science.de
xsfun.co.uk
ziosoftsolutiondevelopment.co.uk