Robtex

Up: 216.170.64.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 216.170.64.0/23
Down right: 216.170.66.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
216.170.64.50	PTR	ip6450.inlinenet.net
216.170.65.35	A	incare360.net
216.170.65.35	A	martinrawson.com
216.170.65.35	A	kgssteel.com
216.170.65.39	A+PTR	maila.incare360.net
216.170.65.39	A	www1.inline.com
216.170.65.40	A+PTR	maila.incare360.com
216.170.65.40	A	exchange03.incare360.net
216.170.65.40	A	mail.theparkcompanies.com
216.170.65.42	A	ns01.incare360.net
216.170.65.44	A	firestompers.net
216.170.65.44	A	aeabenefits.com
216.170.65.44	A	propowersolutions.com
216.170.66.2	A	mail.pelhamonline.com
216.170.66.5	A+PTR	exchange.pelhamonline.com
216.170.66.24	A	mail.medmanagers.net
216.170.66.35	A+PTR	ns2.tfoley.net
216.170.66.36	A+PTR	mail.tfoley.net
216.170.66.66	A	mail.rfgretirement.com
216.170.66.218	A	mail.bradfordbuilding.com
216.170.66.226	A	stomp.boazk12.org
216.170.67.4	A+PTR	ns1.inlinenet.net
216.170.67.5	PTR	ns3.inlinenet.net
216.170.67.5	PTR	mail.valleydale.org
216.170.67.10	A+PTR	backup.inlinenet.net
216.170.67.15	A	mailqueue.inline.com
216.170.67.16	A	mailgate.inline.com
216.170.67.17	A+PTR	mailgate2.inline.com
216.170.67.18	A+PTR	mailgate1.inline.com
216.170.67.18	A	mailgate4.inline.com
216.170.67.19	PTR	mailgate3.inline.com
216.170.67.20	A	mta1.inlinenet.net
216.170.67.21	A	spamopt.inlinenet.net
216.170.67.25	A	spamx.inlinenet.net
216.170.67.29	A	lvs-slave.inlinenet.net
216.170.67.30	A	lvs-master.inlinenet.net
216.170.67.67	PTR	mail2.exspend.com
216.170.67.73	A	mail.omginc.com
216.170.67.76	A	netstats.inlinenet.net
216.170.67.130	A	netbackup.inlinenet.net
216.170.67.132	A	fg50fws.inlinenet.net
216.170.67.204	PTR	exchange.rosebayhomes.com
216.170.67.204	PTR	mail.rosebayhomes.com
216.170.67.204	A	landworthexchange.org
216.170.67.210	A	xstop.inlinenet.net