Robtex

Up: 83.68.16.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 83.68.16.0/23
Down right: 83.68.18.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
83.68.17.110	A	office.chiyoda-europe.com
83.68.17.118	A	radersma-2.demon.nl
83.68.17.121	A	static.prooost.nl
83.68.17.129	A+PTR	a83-68-17-129.adsl.xs4all.nl
83.68.17.129	A	office2.transinfo.nl
83.68.17.141	PTR	83-68-17-141.ip.xs4all.nl
83.68.18.2	PTR	a83-68-18-2.adsl.xs4all.nl
83.68.18.2	A	mikeremmerswaal.com
83.68.18.17	PTR	a83-68-18-17.adsl.xs4all.nl
83.68.18.17	A	wtiaih.com
83.68.18.17	A	ygjeivnzvwr.net
83.68.18.21	A+PTR	twigalodge.xs4all.nl
83.68.18.23	A	famvannoort-2.demon.nl
83.68.18.24	A	alte.xs4all.nl
83.68.18.42	A	*.zengerink.com
83.68.18.42	A	www.zengerink.com
83.68.18.42	A	mail.zengerink.com
83.68.18.64	A+PTR	a83-68-18-64.adsl.xs4all.nl
83.68.18.64	A	mail.karat.nl
83.68.18.149	A	lisafriedman.demon.nl
83.68.18.161	A+PTR	viruly.xs4all.nl
83.68.18.180	A	gembok.xs4all.nl
83.68.18.221	A+PTR	ufo.xs4all.nl
83.68.18.221	A	mx2.loewenthal.nl
83.68.19.45	A	vse.xs4all.nl
83.68.19.51	A	accessenergy.eu
83.68.19.51	A	mail.accessenergy.eu
83.68.19.51	A	hakkers.org
83.68.19.68	A+PTR	a83-68-19-68.adsl.xs4all.nl
83.68.19.125	A	cherrytree.xs4all.nl
83.68.19.170	A	www.statix.nl
83.68.19.176	A+PTR	sdddssbb.xs4all.nl
83.68.19.176	A	mail.vanbergeijkbeheer.nl
83.68.19.176	A	vbbvastgoed.nl
83.68.19.186	A+PTR	thuis.oversoft.nl
83.68.19.187	A	vtsupport.nl
83.68.19.187	A	lanarie.nl
83.68.19.187	A	arjenvantol.nl
83.68.19.189	A	maxhuisman.nl
83.68.19.191	A	berserkly.xs4all.nl
83.68.19.194	A	violinde.nl
83.68.19.194	A	vrijeschoolvalentijn.nl
83.68.19.199	A	agvanhattum.demon.nl
83.68.19.232	A	jorritsma100.demon.nl
83.68.19.241	A	oakhl.xs4all.nl
83.68.19.244	A	mail.roothub.nl
83.68.19.244	A	roothub.nl
83.68.19.252	A	jeroenjonkman.nl
83.68.19.252	A	blauwe-rus.nl
83.68.19.252	A	russian-angels.nl