Robtex

Up: 162.217.72.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 162.217.72.0/23
Down right: 162.217.74.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
162.217.72.14	PTR	block9.public.monkeybrains.net
162.217.72.23	A	fearcomplication.com
162.217.72.32	PTR	block9.public.monkeybrains.net
162.217.72.57	PTR	block9.public.monkeybrains.net
162.217.72.70	PTR	block9.public.monkeybrains.net
162.217.72.113	PTR	block9.public.monkeybrains.net
162.217.72.166	PTR	block9.public.monkeybrains.net
162.217.72.195	PTR	block9.public.monkeybrains.net
162.217.72.195	A	g4way.sparker.net
162.217.72.195	A	sparker.net
162.217.72.205	PTR	block9.public.monkeybrains.net
162.217.72.206	PTR	block9.public.monkeybrains.net
162.217.72.233	PTR	block9.public.monkeybrains.net
162.217.73.6	A+PTR	v315.static.monkeybrains.net
162.217.73.10	PTR	crowdtilt.static.monkeybrains.net
162.217.73.17	PTR	block9.public.monkeybrains.net
162.217.73.25	PTR	block9.public.monkeybrains.net
162.217.73.47	PTR	block9.public.monkeybrains.net
162.217.73.48	A+PTR	net-sfo.static.monkeybrains.net
162.217.73.70	PTR	block9.public.monkeybrains.net
162.217.73.115	A	thealtarproject.org
162.217.73.137	PTR	gw-sf-forensics.static.monkeybrains.net
162.217.73.140	PTR	block9.public.monkeybrains.net
162.217.73.140	A	sffisrv01.sffi.us
162.217.73.163	PTR	block9.public.monkeybrains.net
162.217.73.163	A	ovaltofu.org
162.217.73.163	A	mail.ovaltofu.org
162.217.73.174	PTR	block9.public.monkeybrains.net
162.217.73.174	A	mail.tylercasselman.com
162.217.73.202	PTR	cloudscaling.static.monkeybrains.net
162.217.73.202	A	fwa-inc.com
162.217.73.206	PTR	available.static.monkeybrains.net
162.217.73.217	A+PTR	cinta333kearny2.static.monkeybrains.net
162.217.73.218	PTR	731-propertymanagement.static.monkeybrains.net
162.217.73.224	PTR	net-450sutter.static.monkeybrains.net
162.217.73.226	PTR	block9.public.monkeybrains.net
162.217.73.228	A	mail.iisinet.com
162.217.73.245	A	portal.invitae.com
162.217.74.17	PTR	block9.public.monkeybrains.net
162.217.74.26	PTR	block9.public.monkeybrains.net
162.217.74.72	A+PTR	162-217-74-72.public.monkeybrains.net
162.217.74.109	PTR	nexmo.static.monkeybrains.net
162.217.74.118	PTR	block9.public.monkeybrains.net
162.217.74.132	PTR	block9.public.monkeybrains.net
162.217.74.142	PTR	block9.public.monkeybrains.net
162.217.74.198	PTR	block9.public.monkeybrains.net
162.217.74.227	A+PTR	162-217-74-227.public.monkeybrains.net
162.217.74.251	A+PTR	162-217-74-251.public.monkeybrains.net
162.217.74.255	PTR	block9.public.monkeybrains.net
162.217.75.7	PTR	block9.public.monkeybrains.net
162.217.75.8	PTR	block9.public.monkeybrains.net
162.217.75.18	PTR	kellerwilliams.static.monkeybrains.net
162.217.75.34	PTR	wix.static.monkeybrains.net
162.217.75.34	A	showmyscreen.net
162.217.75.63	PTR	block9.public.monkeybrains.net
162.217.75.64	PTR	block9.public.monkeybrains.net
162.217.75.72	PTR	block9.public.monkeybrains.net
162.217.75.72	A	residentialcareguide.org
162.217.75.86	PTR	block9.public.monkeybrains.net
162.217.75.117	PTR	block9.public.monkeybrains.net
162.217.75.127	PTR	block9.public.monkeybrains.net
162.217.75.128	PTR	block9.public.monkeybrains.net
162.217.75.147	A	packetspike.net
162.217.75.171	PTR	block9.public.monkeybrains.net
162.217.75.171	A	charm.enth.net
162.217.75.182	A	chacona.com
162.217.75.186	PTR	block9.public.monkeybrains.net
162.217.75.186	A	cyberion.net
162.217.75.199	PTR	block9.public.monkeybrains.net
162.217.75.199	A	princesscreampie.com
162.217.75.205	PTR	block9.public.monkeybrains.net
162.217.75.205	A	charm.enth.net
162.217.75.222	PTR	block9.public.monkeybrains.net
162.217.75.228	A	crate.fiid.net
162.217.75.243	PTR	block9.public.monkeybrains.net
162.217.75.248	PTR	block9.public.monkeybrains.net
162.217.75.248	A	expositorium.org