Robtex

Up: 207.231.192.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 207.231.200.0/22
Down right: 207.231.204.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
207.231.200.9	A+PTR	rtr01-ge-3-0-0.net.iad1.webmd.com
207.231.200.10	A+PTR	fw02-eth-1-1.net.iad1.webmd.com
207.231.200.22	A+PTR	rtr03-ge-2-1-0.net.iad1.webmd.com
207.231.200.34	A+PTR	rtr04-ge-4-1-0.net.iad1.webmd.com
207.231.200.47	A	rtr01-ge-3-0-3.net.iad1.webmd.com
207.231.200.51	A+PTR	rtr02-ge-3-0-3.net.iad1.webmd.com
207.231.200.53	A	rtr05-ge-1-0-0.net.iad1.webmd.com
207.231.200.59	A+PTR	rtr06-ge-1-1-0.net.iad1.webmd.com
207.231.200.62	A	rtr05-ge-1-3-0.net.iad1.webmd.com
207.231.200.103	A	mail.webmd.net
207.231.200.130	A+PTR	rtr01-ge-2-2-1.net.iad1.webmd.com
207.231.200.132	A	rtr02-ge-3-0-1.net.iad1.webmd.com
207.231.200.134	A	rtr02-ge-2-2-1.net.iad1.webmd.com
207.231.200.137	A+PTR	rtr03-ge-4-2-5.net.iad1.webmd.com
207.231.200.138	A	fw06-eth2-2.net.iad1.webmd.com
207.231.200.142	A	fw06-eth2-2.net.iad1.webmd.com
207.231.201.20	A	ftp.webmd.com
207.231.202.21	A+PTR	mx.qa00.medscape.com
207.231.202.21	A	biometrics.test.webmd.com
207.231.202.127	A	debug-vp.webmd.com
207.231.202.130	A	www.qa00.medicinenet.com
207.231.202.133	A	css.perf.webmd.com
207.231.202.133	A	web-performance-testing-proxy.webmd.com
207.231.202.133	A	img.perf.webmd.com
207.231.202.151	A	qa.webmd.com
207.231.204.12	A	webmail.medscape.com
207.231.204.12	A	webmail.iad1.medscape.com
207.231.204.12	A	pol.net
207.231.204.13	PTR	popmail.iad1.medscape.com
207.231.204.29	A	search.medicinenet.com
207.231.204.29	A	search.iad1.medicinenet.com
207.231.204.32	A	as.webmd.com
207.231.204.32	A	iad1.as.webmd.com.akadns.net
207.231.204.33	A	evergreen.ma1.medscape.com
207.231.204.34	A	www.iad1.webmd.com
207.231.204.51	A	answers.iad1.webmd.com
207.231.204.52	A	origin-asimg.webmd.com
207.231.204.52	A	ads.webmd.com
207.231.204.56	A	medscapecme.com
207.231.204.56	A	migraines-101.com
207.231.204.56	A	webmdmedsphere.com
207.231.204.98	A	origin-www.wbmd.com
207.231.204.98	A	www.hlth.com
207.231.204.98	A	wbmd.com
207.231.204.116	A	wlb.www.medicinenet.com.akadns.net
207.231.204.133	A	regimg.iad1.webmd.com
207.231.204.141	A	iad1-prf.as.webmd.com.akadns.net
207.231.204.141	A	as.medscape.com
207.231.204.141	A	geolb-prf.as.webmd.com.akadns.net
207.231.204.179	A	practiceadvancementmail.com
207.231.204.179	A	jobsonopticalgroup.com
207.231.204.179	A	revieweducationgroup.com
207.231.204.183	A	uk.hilco.com
207.231.204.184	A	santinelli.com
207.231.204.184	A	www.santinelli.com
207.231.204.190	A	nouveaueyewear.org
207.231.204.190	A	nouveaueyewear.info
207.231.204.193	A	i-dealoptics.com
207.231.204.193	A	www.i-dealoptics.com
207.231.206.10	A	www.healthshare.com
207.231.206.10	A	www.webmdhealth.com
207.231.206.11	A	admin.webmdhealth.com
207.231.206.12	A	di.webmdhealth.com
207.231.206.23	A	www.sqctool.com
207.231.206.24	A	fepblue.webmdhealth.com
207.231.206.41	A	membership.webmd.com
207.231.206.41	A	membership.webmdhealth.com
207.231.206.41	A	healthmanager.webmd.com
207.231.206.71	A	previewpsa.sqctool.com
207.231.206.77	A	webmdengagementhub.com
207.231.206.199	A	eastmailer.webmdhealth.com
207.231.206.200	A+PTR	eastwebmail.webmdhealth.com
207.231.206.235	A	focusonheart.com
207.231.206.235	A	focusonmedterms.com
207.231.206.235	A	focusoneyesight.com