Robtex

Up: 66.225.234.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 66.225.235.0/25
Down right: 66.225.235.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
66.225.235.4	A+PTR	col01.iad.catbird.com
66.225.235.4	A	root.pcishield.net
66.225.235.4	A	catbirdnetworks.biz
66.225.235.36	PTR	unknown.iad.scnet.net
66.225.235.36	A	newsbin.com
66.225.235.37	PTR	unknown.iad.scnet.net
66.225.235.37	A	djii.com
66.225.235.37	A	www.usenettools.net
66.225.235.40	A+PTR	enigma.djii.com
66.225.235.40	A	mail.djii.com
66.225.235.40	A	ns.djii.com
66.225.235.41	A+PTR	ej6.djii.com
66.225.235.41	A	dynamicdigitalimages.net
66.225.235.41	A	portotreatment.com
66.225.235.43	PTR	unknown.iad.scnet.net
66.225.235.43	A	forum.newsbin.com
66.225.235.43	A	wiki.newsbin.com
66.225.235.44	PTR	unknown.iad.scnet.net
66.225.235.47	PTR	unknown.iad.scnet.net
66.225.235.47	A	ns1.djii.com
66.225.235.51	PTR	unknown.iad.scnet.net
66.225.235.51	A	irc2.newsbin.com
66.225.235.55	PTR	unknown.iad.scnet.net
66.225.235.55	A	is.newsbin.com
66.225.235.56	PTR	unknown.iad.scnet.net
66.225.235.59	A	everyonecommunicates.com
66.225.235.59	A	everyonecommunicates.org
66.225.235.59	A	everyonecommunicates.net
66.225.235.60	A	www.seizuretracker.com
66.225.235.60	A	seizuretracker.com
66.225.235.61	PTR	unknown.iad.scnet.net
66.225.235.61	A	tsctrial.org
66.225.235.62	PTR	unknown.iad.scnet.net
66.225.235.62	A	mx2.mossc.com
66.225.235.66	A+PTR	pc211a.servercentral.net
66.225.235.88	PTR	unknown.iad.scnet.net
66.225.235.93	PTR	unknown.iad.scnet.net
66.225.235.94	PTR	birdview.com
66.225.235.106	PTR	unknown.iad.scnet.net
66.225.235.115	PTR	mail.pc-shareware.com
66.225.235.115	A	albertmarrewa.com
66.225.235.115	A	estherpearlman.com
66.225.235.116	PTR	unknown.iad.scnet.net
66.225.235.116	A	mail.pcshareware.com
66.225.235.128	PTR	network
66.225.235.135	PTR	unknown.iad.scnet.net
66.225.235.204	PTR	unknown.iad.scnet.net
66.225.235.211	PTR	unknown.iad.scnet.net