Robtex

Up: 212.121.100.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 212.121.100.0/25
Down right: 212.121.100.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
212.121.100.3	PTR	rt100bb121-212-3.routit.net
212.121.100.3	A	s1-eu.ixquick-proxy.com
212.121.100.6	PTR	rt100bb121-212-6.routit.net
212.121.100.6	A	s2-eu.ixquick-proxy.com
212.121.100.6	A	www.ixquick-proxy.com
212.121.100.7	PTR	rt100bb121-212-7.routit.net
212.121.100.8	PTR	rt100bb121-212-8.routit.net
212.121.100.10	A	eu.ixquick-proxy.com
212.121.100.11	PTR	rt100bb121-212-11.routit.net
212.121.100.11	A	eu.ixquick-proxy.com
212.121.100.12	PTR	rt100bb121-212-12.routit.net
212.121.100.13	PTR	rt100bb121-212-13.routit.net
212.121.100.13	A	www.ixquick-proxy.com
212.121.100.13	A	s9-eu.ixquick-proxy.com
212.121.100.40	PTR	mail.pharox.nl
212.121.100.40	A	smtp.navibas.nl
212.121.100.40	A	mail.navibas.nl
212.121.100.50	A+PTR	mail.paxforpeace.nl
212.121.100.50	A	mail.ikvpaxchristi.nl
212.121.100.61	A	mail1.otter.nl
212.121.100.71	PTR	ns1.amity.nl
212.121.100.72	PTR	ns2.amity.nl
212.121.100.73	PTR	ns3.amity.nl
212.121.100.73	A	mail.bakkerijverbeek.nl
212.121.100.74	PTR	ns4.amity.nl
212.121.100.82	PTR	smtp2.amity.nl
212.121.100.84	PTR	rt100bb121-212-84.routit.net
212.121.100.85	PTR	rt100bb121-212-85.routit.net
212.121.100.90	A	remote.dhzdiscount.nl
212.121.100.93	A	flavodor.nl
212.121.100.93	A	www.flavodor.nl
212.121.100.105	A	portal.wekadata.nl
212.121.100.117	A	owa.viergang.nl
212.121.100.119	A	mail.ecotecbv.nl
212.121.100.124	PTR	rt100bb121-212-124.routit.net
212.121.100.124	A	bonecollector.eu
212.121.100.124	A	adolabv.eu
212.121.100.138	PTR	spam2.veiligkantoor.com
212.121.100.138	A	mail.leijdensbeleg.nl
212.121.100.138	A	spam2.starsupply.nl
212.121.100.153	A	mail.hoogenboezem.nl
212.121.100.175	PTR	rt100bb121-212-175.routit.net
212.121.100.175	A	dbr-pumps-parts.nl
212.121.100.180	A+PTR	mail.klaverblad.nl
212.121.100.194	PTR	rt100bb121-212-194.routit.net
212.121.100.196	PTR	mail.klaverblad.nl
212.121.100.198	PTR	rt100bb121-212-198.routit.net
212.121.100.200	PTR	rt100bb121-212-200.routit.net
212.121.100.200	A	klaverbladextranet.klaverblad.nl
212.121.100.216	PTR	rt100bb121-212-216.routit.net
212.121.100.220	A	mail.hommeloccasions.nl
212.121.100.230	A	maildrop.heezik.nl
212.121.100.232	A	maildrop2.heezik.nl