Robtex

Up: 66.186.112.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 66.186.112.0/22
Down right: 66.186.116.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
66.186.113.15	A+PTR	vpn.idg.com
66.186.113.15	PTR	vpneast.idg.com
66.186.113.66	A	cag.idg.com
66.186.113.100	A	ftp.idg.com
66.186.113.124	A	usmaedg01.idg.com
66.186.113.125	A	usmaedg02.idg.com
66.186.113.126	A+PTR	hybrid.idg.com
66.186.113.126	PTR	webmail.idg.com
66.186.113.127	A	usmarly01.idg.com
66.186.113.130	A	access.idg.com
66.186.113.163	A	idgcsgwsus.idg.com
66.186.113.171	A	docs.idg.com
66.186.114.18	A+PTR	cwfeventsweb.computerworld.com
66.186.114.18	A	snworlando.com
66.186.114.18	A	greenitsymposium.com
66.186.114.169	A+PTR	cwonline.computerworld.com
66.186.114.172	A+PTR	cwresources.computerworld.com
66.186.114.241	A	mail.ipsidg.com
66.186.114.246	A	www.idgcentral.com
66.186.114.246	A	idgcentral.com
66.186.114.249	A	idgns.com
66.186.116.10	A+PTR	wecmail.idgworldexpo.com
66.186.116.28	A+PTR	mailer.idgconnect.com
66.186.116.28	A+PTR	online.idgconnect.com
66.186.116.29	A	mailer.idgcentral.com
66.186.116.64	A	makecontentwork.com
66.186.116.64	A	www.makecontentwork.com
66.186.116.64	A	makeconversionwork.com
66.186.116.72	A	media.cxo.com
66.186.116.73	A+PTR	survey.cxo.com
66.186.116.75	A	ciohub.cio.com
66.186.116.76	PTR	www.cioexecutivecouncil.com
66.186.116.76	A	cioexecutivecouncil.com
66.186.116.80	A+PTR	cio.cxo-media.net
66.186.116.81	A+PTR	circulation.cxo-media.net
66.186.116.82	A+PTR	cso.cxo-media.net
66.186.116.83	A+PTR	cxo.cxo-media.net
66.186.116.88	A+PTR	executivecouncil.cxo-media.net
66.186.116.89	A+PTR	executiveprograms.cxo-media.net
66.186.116.90	A+PTR	onlineresources.cxo-media.net
66.186.116.91	A	intranet.idgsn.com
66.186.116.100	A	cosmos.cxo.com
66.186.116.102	A	orders.cxo.com
66.186.116.104	A+PTR	ci.cxo.com
66.186.116.104	A+PTR	galaxy.cxo.com
66.186.116.106	A+PTR	helpdesk.cxo.com
66.186.116.106	A+PTR	public.cxo.com
66.186.116.116	A	ifwsmtp.infoworld.com
66.186.116.140	A	mail.idglist.com
66.186.116.161	A+PTR	events.networkworld.info
66.186.116.162	A+PTR	subscription.networkworld.info
66.186.116.163	A	online.networkworld.info
66.186.116.167	A	server.nww.com
66.186.116.171	A+PTR	xfer.idg.com
66.186.116.180	A+PTR	files.idgcomm.com
66.186.116.180	A+PTR	public.idgcomm.com
66.186.116.181	A	cosmos.idgcomm.com
66.186.116.182	A	orders.idgcomm.com
66.186.116.192	A	atgftp.idgcomm.com