Robtex

Up: 216.122.16.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 216.122.16.0/23
Down right: 216.122.18.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
216.122.16.2	A	hungryhippo2.lightrealm.net
216.122.16.6	A+PTR	dotnetdemo.spaceminder.com
216.122.16.6	A	mail.empire5.net
216.122.16.6	A	www.signalint.com
216.122.16.7	A	ftpdemodev.spaceminder.com
216.122.16.56	PTR	samuel.admin.lightrealm.net
216.122.16.59	PTR	shez.admin.lightrealm.net
216.122.16.60	PTR	g-tape.com
216.122.16.77	PTR	helorum.admin.lightrealm.net
216.122.16.80	PTR	ammon.admin.lightrealm.net
216.122.16.82	PTR	cezoram.admin.lightrealm.net
216.122.16.83	PTR	multiedit.admin.lightrealm.net
216.122.16.103	PTR	affhelp.com
216.122.16.112	PTR	exceptionalfamily.ca
216.122.16.112	A	mail.creativefutures.ca
216.122.16.118	PTR	epsind.com
216.122.16.118	PTR	epsindustries.com
216.122.16.147	PTR	ntmail7.admin.lightrealm.net
216.122.16.161	A	payroll.spaceminder.com
216.122.17.2	A+PTR	r2-17-dsl.sea.lightrealm.net
216.122.17.12	PTR	dev.cqin.org
216.122.17.22	PTR	hunteryostmd.com
216.122.17.44	PTR	mail.settepani.com
216.122.17.51	A	webmail.deckmastercompany.com
216.122.17.55	PTR	smartnetlite.fuscient.com
216.122.17.64	PTR	kaliban.com
216.122.17.83	PTR	bradlee.net
216.122.17.87	A	ip87.beveragemarketingusa.com
216.122.17.186	A	postmaster.ptqmail.com
216.122.17.186	A	*.ptqmail.com
216.122.17.187	A+PTR	skyroomnews.net
216.122.17.188	A	link2tch.com
216.122.17.188	A	postmaster.link2tch.com
216.122.17.188	A	*.link2tch.com
216.122.17.189	PTR	be1.beveragemarketingdata.com
216.122.17.199	PTR	swafo.net
216.122.17.200	PTR	anrproductions.com
216.122.17.201	PTR	balljerseys.com
216.122.17.202	PTR	appliedartsmag.com
216.122.17.202	A	mail.appliedarts.ca
216.122.17.202	A	mail.appliedartsmag.ca
216.122.17.205	PTR	www.gsba.com
216.122.17.248	PTR	alpinelakes.net
216.122.18.5	PTR	tokion.com
216.122.18.87	A	www.flamencoconnection.com
216.122.18.87	A	flamencon.com
216.122.18.88	A	signaturesct.com
216.122.18.195	PTR	cfirstclass.com
216.122.18.244	A	test.drwdesign.com
216.122.18.250	A	asubio.com
216.122.19.28	PTR	naturecleanliving.com
216.122.19.34	A	travelautomation.org
216.122.19.40	PTR	buyselllease.com
216.122.19.90	PTR	hawaiifosterparent.org
216.122.19.90	A	hostmaster.capguy.com
216.122.19.90	A	*.capguy.com
216.122.19.109	PTR	dttag.com
216.122.19.118	PTR	trans1.com
216.122.19.150	A	mail.hostprosupport.com
216.122.19.150	A	*.hostprosupport.com
216.122.19.150	A	hostprosupport.com
216.122.19.163	PTR	rajnitza-express.com
216.122.19.165	PTR	lee-re.com
216.122.19.187	PTR	dwightandrus.com
216.122.19.198	PTR	thesciac.org
216.122.19.214	PTR	gardnerfox.com
216.122.19.219	PTR	toleos.com
216.122.19.231	A	flint-communications.com