Robtex

Up: 64.246.0.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 64.246.4.0/23
Down right: 64.246.6.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
64.246.4.0	PTR	ev1s-64-246-4-0.theplanet.com
64.246.4.4	PTR	1h.com
64.246.4.8	PTR	ev1s-64-246-4-8.theplanet.com
64.246.4.37	PTR	ev1s-64-246-4-37.theplanet.com
64.246.4.88	PTR	ev1s-64-246-4-88.theplanet.com
64.246.4.91	PTR	ev1s-64-246-4-91.theplanet.com
64.246.4.92	PTR	ev1s-64-246-4-92.theplanet.com
64.246.4.196	A+PTR	web1.handhelditems.com
64.246.4.196	A	mail.handhelditems.com
64.246.4.205	A+PTR	mail1.handhelditems.com
64.246.4.205	A	*.hhinewsletter.com
64.246.4.205	A	hhinewsletter.com
64.246.4.216	PTR	handhelditems.com
64.246.4.230	A	mail230.virid.plugin.com.br
64.246.4.230	A	tr.entrega.plugin.com.br
64.246.5.203	A+PTR	mail1.logicmatehost.com
64.246.5.203	A	pleskwin1.logicmatehost.com
64.246.5.204	A	mail2.logicmatehost.com
64.246.5.204	A	pleskwin2.logicmatehost.com
64.246.5.205	A	mail3.logicmatehost.com
64.246.5.255	PTR	ev1s-64-246-5-255.theplanet.com
64.246.6.10	PTR	hserver.com.br
64.246.6.28	PTR	ev1s-64-246-6-28.theplanet.com
64.246.6.36	PTR	web.chieftain.org
64.246.6.57	PTR	ns2.lasyk.net
64.246.6.57	A	www.4u.dk
64.246.6.58	A	mail.laughparty.com
64.246.6.89	PTR	mountainwings.com
64.246.6.95	PTR	advancedimaginations.com
64.246.6.95	A	virtualguild.com
64.246.6.95	A	allsizecandles.com
64.246.6.98	A	ns1.nsserver.org
64.246.6.99	PTR	pm1.principlemedia.net
64.246.6.99	A	mail.action-rental.com
64.246.6.99	A	mail.local3991.org
64.246.6.119	A	mail.dozenflowers.com
64.246.6.119	A	dozenflowers.com
64.246.6.133	PTR	fillthatjob.com
64.246.6.138	PTR	pieskysoft.com
64.246.6.150	PTR	www.darkwood.com
64.246.6.178	PTR	ns.hserver.com.br
64.246.6.229	PTR	ev1s-64-246-6-229.theplanet.com
64.246.6.229	A	processmarket.com
64.246.6.229	A	assetwisdom.com
64.246.6.235	PTR	ns2.sharpel.com
64.246.6.244	PTR	ev1s-64-246-6-244.theplanet.com
64.246.6.244	A	bestplaces2eat.com
64.246.6.244	A	mail.bestplaces2eat.com
64.246.7.0	PTR	ev1s-64-246-7-0.theplanet.com
64.246.7.1	PTR	chieftain.com
64.246.7.5	PTR	ns1.iub.net
64.246.7.102	A	www.acai.it
64.246.7.150	PTR	fwaggle.net
64.246.7.178	PTR	ns10.gisol.com