go
dns1.ispgateway.de has one IP number , but the reverse is ns.namespace4you.de. srv1-wil.ma, gg.eismann.de, ns.3mark49.de, srv2-typo3.ma, srv1-diplo.ma and at least three other hosts point to the same IP. atix.org, comoonics.com and kitzbuehel-triathlon.org use this as a nameserver. ispgateway.de is a domain controlled by two nameservers at namespace4you.de. They are on different IP networks. Incoming mail for ispgateway.de is handled by one mailserver at ispgateway.de themselves. ispgateway.de has one IP number. dns1.ispgateway.de is hosted on a server in Germany.

dns1.ispgateway.de
a records
 
+ 80.67.16.124 80.67.16.0/20 AS34011 ns.namespace4you.de
+ --- ns.namespace4you.de

ispgateway.de
a records
 
+ 80.67.16.98 80.67.16.0/20 AS34011  
+ ---  
ns-soa records
ns.namespace4you.de
+ 80.67.16.124 80.67.16.0/20 AS34011 -
+ --- -
ns records
ns.namespace4you.de
+ 80.67.16.124 80.67.16.0/20 AS34011 -
+ --- -
ns2.namespace4you.de
+ 193.223.77.3 193.223.77.0/24 AS24940 -
mx records
mxlb.ispgateway.de
+ 80.67.18.126 80.67.16.0/20 AS34011 -
+ --- -
ip numbers of host
80.67.16.124
ptrs of ip numbers
ns.namespace4you.de
ip numbers using ptr to this host
62.67.200.124
hostnames sharing ip with a-records
gg.eismann.de
innocenceindanger.net
ns.3mark49.de
ns.namespace4you.com
ns.namespace4you.de
srv1-diplo.ma
srv1-wil.ma
srv2-typo3.ma
domains using this as nameserver
atix.org
comoonics.com
kitzbuehel-triathlon.org
domains using this as nameserver under another name
3mark49.de
adus.de
aus-zeit.com
beautysports.com
beerdeluxe.com
bosold.com
diplo.ma
dodos.com
domain-factory.de
domainfactory.de
dopanic.com
girlsandbikinis.com
grafikkarte.net
harmsen-engineering.com
hotredfetish.com
hsa-germany.de
ispgateway.de
istar.net
namespace4you.de
nylontop100.com
pkv.com
reedexpo.net
starialinks.com
swopex.com
thatsbritain.co.uk
time2die.de
wil.ma
domains using this as mailserver under another name
autohaus-hirch.de
eiszwerg.com
gg.eismann.de
nestle-schoeller.com
nestleschoeller.com
schoeller-holding.com
used as nameserver but missing in zone
atix.org
comoonics.com
kitzbuehel-triathlon.org