Robtex

Up: 194.121.96.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 194.121.104.0/22
Down right: 194.121.108.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
194.121.104.0	A+PTR	net-local.ilk.de
194.121.104.8	A+PTR	unassigned-8.104.121.194.in-addr.arpa
194.121.104.8	A	smtp.ilk.net
194.121.104.8	A	smtp1.ilk.net
194.121.104.11	PTR	unassigned
194.121.104.47	A	unassigned-47.104.121.194.in-addr.arpa
194.121.104.92	A	unassigned-92.104.121.194.in-addr.arpa
194.121.104.178	A+PTR	unassigned-178.104.121.194.in-addr.arpa
194.121.108.28	A	office.corpuls.nl
194.121.108.28	A	smtp.corpuls.nl
194.121.108.58	PTR	static.kpn.net
194.121.108.123	PTR	mail.essholding.com
194.121.108.123	A	essholding.com
194.121.108.226	A	mail.vandongenaccountancy.nl
194.121.108.244	A	mail.synwood.nl
194.121.109.50	A+PTR	mail.lejeune.nl
194.121.109.243	A	mail.fakronederland.nl
194.121.110.152	PTR	static.kpn.net
194.121.111.24	PTR	static.kpn.net
194.121.111.72	PTR	static.kpn.net
194.121.111.178	A	mail.n-sea.com
194.121.111.178	A	mail.seatec.nl