Robtex

Up: 72.51.12.0/22
Can't show all results, try to descend to a more specific CIDR
Down left: 72.51.12.0/24
Down right: 72.51.13.0/24
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
72.51.12.8	A+PTR	kvm.conflux.net
72.51.12.10	A+PTR	ns1.conflux.net
72.51.12.11	PTR	mail.conflux.net
72.51.12.12	A+PTR	ns2.conflux.net
72.51.12.16	A+PTR	tonkinese.conflux.net
72.51.12.17	A	abyssinian.conflux.net
72.51.12.19	A	ragdoll.conflux.net
72.51.12.20	PTR	birman.conflux.net
72.51.12.21	A+PTR	nebelung.conflux.net
72.51.12.32	A	www.cryptocybernetics.com
72.51.12.33	A	server.cryptocybernetics.com
72.51.12.34	A	secure.cryptocybernetics.com
72.51.12.35	A+PTR	projects.cryptocybernetics.com
72.51.12.36	A	email.cryptocybernetics.com
72.51.12.37	A+PTR	stage.cryptocybernetics.com
72.51.12.38	A	cryptocybernetics.com
72.51.12.42	PTR	painter.org
72.51.12.42	A	mail.painter.org
72.51.12.44	PTR	xsides.com
72.51.12.58	PTR	acorndynamics.com
72.51.12.70	PTR	nason.net
72.51.12.71	PTR	mail.nason.net
72.51.12.79	PTR	grayareatech.com
72.51.12.90	PTR	knotpad.com
72.51.12.95	A+PTR	conflux.net
72.51.12.95	A	www.conflux.net
72.51.12.95	A	mail.conflux.net
72.51.12.97	PTR	conflux.com
72.51.12.98	A+PTR	tjp.conflux.net
72.51.12.99	A	park.conflux.net
72.51.12.102	PTR	septalus.com
72.51.12.110	A+PTR	switchbox.com
72.51.12.110	A	darkstone.com
72.51.12.110	A	darkstone.info
72.51.12.112	A+PTR	tchou.com
72.51.12.114	A+PTR	vpix.com
72.51.12.114	A	www.vpix.com
72.51.12.144	PTR	p17.org
72.51.12.146	A	cdn.p17.org
72.51.12.147	PTR	dns.p17.org
72.51.12.153	A	mail.p17.org
72.51.12.153	A	mail.pavelt.com
72.51.12.156	PTR	treskunov.org
72.51.13.10	PTR	dns.winkwinknodnod.net
72.51.13.22	PTR	hoosier.winkwinknodnod.net