Robtex

Up: 66.187.204.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 66.187.204.0/25
Down right: 66.187.204.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
66.187.204.2	PTR	hobbes.ibsys.com
66.187.204.5	PTR	thing1.ibsys.com
66.187.204.10	A	akamaiscrooge.ibsys.com
66.187.204.21	PTR	infeed.ibsys.com
66.187.204.21	A	ftp.ibsys.com
66.187.204.22	A	terra101.ibsys.com
66.187.204.25	A	treets100.ibsys.com
66.187.204.27	A+PTR	mailer.ibsys.com
66.187.204.44	A	forums.ibsys.com
66.187.204.46	A+PTR	cf.ibsys.com
66.187.204.46	A	wx.click2weather.com
66.187.204.50	PTR	redir.ibsys.com
66.187.204.50	A	mail.kotatv.com
66.187.204.50	A	www.clickten.com
66.187.204.51	PTR	redirab.ibsys.com
66.187.204.60	A+PTR	origin.ibsys.com
66.187.204.60	A	ccds.ibsys.com
66.187.204.80	PTR	cms.ibsys.com
66.187.204.81	PTR	hippo.ibsys.com
66.187.204.90	A+PTR	vod.ibsys.com
66.187.204.99	PTR	images.ibsys.com
66.187.204.102	A	ns2.ibsys.com
66.187.204.125	A+PTR	origin.search.ibsys.com
66.187.204.140	A+PTR	previeworigin.ibsys.com
66.187.204.221	A	testorigin.ibsys.com
66.187.204.252	PTR	jfk.ibsys.com
66.187.204.253	PTR	castro.ibsys.com