go
degen.nl.uu.net has one IP number , which also has a corresponding reverse pointer. fallback.bitic.nl, fallback.nl.uu.net, fallback.mail.nl.uu.net and mail2.eigenhuis-online.nl point to the same IP. nl.uu.net is a domain controlled by three nameservers. All of them are on different IP networks. Incoming mail for nl.uu.net is handled by one mailserver having a total of two IP numbers. They are on the same IP network. degen.nl.uu.net is hosted on a server in Netherlands.

degen.nl.uu.net
a records
 
+ 193.79.237.174 193.78.0.0/15 AS702 -
+ --- -

nl.uu.net
ns-soa records
ns.nl.net
+ 193.78.240.1 193.78.0.0/15 AS702 -
+ --- -
ns records
ns-sec.ripe.net
+ 193.0.0.196 193.0.0.0/21 AS3333 -
+ --- -
ns.nl.net
+ 193.78.240.1 193.78.0.0/15 AS702 -
auth60.ns.nl.uu.net
+ 193.67.79.134 193.67.0.0/16 AS702 -
mx records
emr.eu.uu.net
+ 195.129.12.211 195.129.0.0/16 AS702 emr0.eu.uu.net
+ --- emr0.eu.uu.net
+ 195.129.12.212 195.129.0.0/16 AS702 emr1.eu.uu.net
+ --- emr1.eu.uu.net
ip numbers of host
193.79.237.174
ptrs of ip numbers
degen.nl.uu.net
ip numbers using ptr to this host
193.79.237.174
hostnames sharing ip with a-records
fallback.bitic.nl
fallback.mail.nl.uu.net
fallback.nl.uu.net
mail2.eigenhuis-online.nl
domains using this as mailserver under another name
*.senco.nl
*.yess.nl
adimec.com
adimec.nl
aex.nl
agn.nl
algemenezeeuwse.nl
amarant.nl
amsterdamwest.net
applicationreplatforming.com
arcus.nl
babytop.nl
bewonersaanspreekpuntschiphol.nl
bezoekbas.nl
bibit.nl
bit-ic.nl
bitic.nl
bn.nl
bnr.nl
bols.com
bombrasil.com
bouwbedrijfgeelen.nl
centurion-akku.nl
cil.net
coa.nl
codi.nl
customer.nl.uu.net
delft.nl
dirkzwager.com
djm.nu
eigenbijdrage.org
eigenhuis-online.nl
eja.nl
epo.nl
esselte.nl
eurocard.nl
evd.nl
fd.nl
goudse.com
goudse.nl
helios-mppd.nl
hetcak.nl
i-tracks.com
ifd-bouw.net
mail.senco.nl
mail.yess.nl
postmaster.senco.nl
postmaster.yess.nl
powercta.com
ritmanlibrary.nl
senco.nl
yess.nl