Robtex

Up: 217.23.56.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 217.23.56.0/25
Down right: 217.23.56.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
217.23.56.0	PTR	dst-se-ost.i-netpartner.net
217.23.56.1	PTR	gigalan-se-ost2-in.i-netpartner.net
217.23.56.1	A	56.23.217.in-addr.arpa
217.23.56.11	A	shop-curly.de
217.23.56.11	A	remote.kluglaser.de
217.23.56.50	A	mx.bigstepssnowboy.de
217.23.56.50	A	mx.sequoia-international-ag.com
217.23.56.65	A	frouter.translutions.net
217.23.56.67	A+PTR	mail.translutions.net
217.23.56.67	A	ns.translutions.net
217.23.56.68	A	gate3.translutions.net
217.23.56.69	A	gate.translutions.net
217.23.56.72	A	unused.translutions.net
217.23.56.76	A	burschi.name
217.23.56.77	PTR	unused4.translutions.net
217.23.56.77	A	indubo.com
217.23.56.77	A	indubo.de
217.23.56.82	A	mail.saxonia-franke-group.com
217.23.56.82	A	mail.saxonia-franke-group.net
217.23.56.99	A	mx.bosch-architekten.com
217.23.56.118	A	remote.walter-group.de
217.23.56.122	PTR	gate-teufel.i-netpartner.net
217.23.56.122	A	mail20.dynacox.de
217.23.56.122	A	mail20.teufel-orthopaedie.de
217.23.56.146	A+PTR	remote.zat-automobiltechnik.de
217.23.56.154	A+PTR	mail.filstal.de
217.23.56.154	A	darabos.com
217.23.56.154	A	dns.filstal.de
217.23.56.158	A	mail.staufen-direkt.de
217.23.56.163	A	mx.kollmar-kisten.de
217.23.56.166	A+PTR	mail.map-prinzing.de
217.23.56.178	PTR	gate-falter.i-netpartner.net
217.23.56.178	A	server2.frankfalter.de
217.23.56.180	A	server2.frankfalter.de
217.23.56.186	A+PTR	mail-gw.comag-ag.de
217.23.56.186	A	mail.comag-ag.de
217.23.56.202	A	www.sh-renz.de
217.23.56.202	A	shrenz.hopto.me
217.23.56.218	A	remote.walter-formenbau.com
217.23.56.227	A+PTR	remote.paszt.de
217.23.56.228	A+PTR	mail1.dm-maschinen.com
217.23.56.234	PTR	gate.burg-staufeneck.de
217.23.56.242	A	mail.staufen-direkt.de
217.23.56.242	A	mail1.amtectrading.com
217.23.56.244	A	mail.staufen-direkt.de
217.23.56.251	A	mail1.it-works.info