Robtex

Up: 72.10.176.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 72.10.180.0/23
Down right: 72.10.182.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
72.10.180.20	A+PTR	hcgda.huronconsultinggroup.com
72.10.180.22	A	da.huronconsultinggroup.com
72.10.180.24	A+PTR	da.studergroup.com
72.10.180.26	A+PTR	mpmailgate.huronconsultinggroup.com
72.10.180.26	A	mail2.huronconsultinggroup.com
72.10.180.27	A+PTR	mpmailgate2.huronconsultinggroup.com
72.10.180.28	A+PTR	ccmailgate.huronclick.com
72.10.180.29	A+PTR	ccmailgate2.huronclick.com
72.10.180.30	A+PTR	securefile.huronconsultinggroup.com
72.10.180.31	A+PTR	securecabinet.huronconsultinggroup.com
72.10.180.42	A+PTR	owa.huronconsultinggroup.com
72.10.180.42	A	autodiscover.huronconsultinggroup.com
72.10.180.43	A+PTR	oa.huronconsultinggroup.com
72.10.180.51	A	do.huronconsultinggroup.com
72.10.180.53	A+PTR	ns1.huronconsultinggroup.com
72.10.180.56	A+PTR	mpexedge02.huronconsultinggroup.com
72.10.180.63	A+PTR	mpltpbk06.huronconsultinggroup.com
72.10.180.64	A+PTR	mpltpbk03.huronconsultinggroup.com
72.10.180.65	A+PTR	mpltpbk04.huronconsultinggroup.com
72.10.180.66	A+PTR	mpltpbk05.huronconsultinggroup.com
72.10.180.67	A+PTR	mpltpbk02.huronconsultinggroup.com
72.10.180.68	A+PTR	mpltpbk01.huronconsultinggroup.com
72.10.180.69	A+PTR	mpnbultp01.huronconsultinggroup.com
72.10.180.70	PTR	newhires.huronconsultinggroup.com
72.10.180.71	A+PTR	eroom.huronconsultinggroup.com
72.10.180.76	A+PTR	fulldisk.huronconsultinggroup.com
72.10.180.77	A	fulldisk.huronconsultinggroup.com
72.10.180.84	A+PTR	news.huroninfo.com
72.10.180.85	A+PTR	projectconsultant.huronconsultinggroup.com
72.10.180.85	A	newhires.huronconsultinggroup.com
72.10.180.86	PTR	remoteapps.huronconsultinggroup.com
72.10.180.88	A+PTR	irm.huronconsultinggroup.com
72.10.180.89	A+PTR	remote.huronconsultinggroup.com
72.10.180.90	PTR	survey.huronconsultinggroup.com
72.10.180.92	PTR	integrifyportal.huronconsultinggroup.com
72.10.180.93	A+PTR	socialtext.huronconsultinggroup.com
72.10.180.94	A+PTR	nxt3.huronconsultinggroup.com
72.10.180.95	A+PTR	mashups.huronconsultinggroup.com
72.10.180.101	A+PTR	csa2.huronconsultinggroup.com
72.10.180.105	A+PTR	sso-mtp.huronconsultinggroup.com
72.10.180.106	PTR	dev-sso-mtp.huronconsultinggroup.com
72.10.180.106	A	sf2sc.huronconsultinggroup.com
72.10.180.107	A+PTR	awseg.huronconsultinggroup.com
72.10.180.108	PTR	vip.huronconsultinggroup.com
72.10.180.108	A+PTR	awtunnelr.huronconsultinggroup.com
72.10.180.120	A+PTR	utss-ecrt.huronecrt.com
72.10.180.125	PTR	vip.huronconsultinggroup.com
72.10.180.128	A+PTR	dns1.huronconsultinggroup.com
72.10.180.130	PTR	vip.huronconsultinggroup.com
72.10.180.130	A+PTR	mp1awseg01.huronconsultinggroup.com
72.10.180.131	A+PTR	mp1awseg02.huronconsultinggroup.com
72.10.180.132	A+PTR	mp1awtunnel01.huronconsultinggroup.com
72.10.180.133	A+PTR	mp1awtunnel02.huronconsultinggroup.com
72.10.180.134	A	ecrttest.harvard.edu
72.10.180.135	A	ecrttrain.harvard.edu
72.10.180.143	A	www.hrppsops.com
72.10.180.146	A	hcgcredantpol.huronconsultinggroup.com
72.10.180.149	A+PTR	brand.huronconsultinggroup.com
72.10.180.149	A	survey.huronconsultinggroup.com
72.10.180.149	A	password.huronconsultinggroup.com
72.10.180.151	A+PTR	suny.huronecrt.com
72.10.180.155	PTR	adistrategies.com
72.10.180.155	PTR	huronmedicalaffairssurvey.com
72.10.180.155	PTR	hyperioneers.com
72.10.180.165	A	remoteapps.huronconsultinggroup.com
72.10.180.165	A	apps.huronconsultinggroup.com
72.10.180.166	A	ecrt.harvard.edu
72.10.180.171	A	huronecrt.com
72.10.180.175	PTR	password.huronconsultinggroup.com
72.10.180.177	A+PTR	huroninfomail.huronconsultinggroup.com
72.10.180.199	PTR	hcgcredantpol.huronconsultinggroup.com
72.10.180.202	A+PTR	ldgateway.huronconsultinggroup.com
72.10.180.204	PTR	huronefacs.com
72.10.180.205	PTR	huronworks.com
72.10.180.224	A	huronhelpinghands.com
72.10.180.228	A+PTR	usa.huronefacs.com
72.10.180.228	A+PTR	utsa.huronecrt.com
72.10.180.228	A+PTR	utsa.huronefacs.com
72.10.180.230	PTR	uncinsights.huronconsultinggroup.com
72.10.180.245	A+PTR	utmb-ecrt-stage.huronecrt.com
72.10.180.246	A+PTR	utss-ecrt-stage.huronecrt.com
72.10.180.249	A+PTR	utmb-ecrt-train.huronecrt.com
72.10.180.252	A+PTR	utss-ecrt-train.huronecrt.com
72.10.182.15	A+PTR	vzw.huronconsultinggroup.com
72.10.182.15	A	vpn.huronconsultinggroup.com
72.10.182.25	A+PTR	epmga.huronconsultinggroup.com
72.10.182.26	A+PTR	hcapasswords.huronconsultinggroup.com
72.10.182.27	A+PTR	mp1lgshwebp.huronconsultinggroup.com
72.10.182.34	A+PTR	mp1epmgaweb.huronconsultinggroup.com
72.10.182.41	A+PTR	mp1cajhmwebp.huronconsultinggroup.com
72.10.182.43	A+PTR	mp1hcatransfer01.huronconsultinggroup.com
72.10.182.48	A+PTR	harvard.huronecrt.com
72.10.182.60	PTR	sf2sc.huronconsultinggroup.com
72.10.182.67	A	mail.interactrx.com
72.10.182.67	A	*.interactrx.com
72.10.182.69	A+PTR	rds.huronconsultinggroup.com
72.10.182.69	A+PTR	mp1rds01.huronconsultinggroup.com
72.10.182.73	A+PTR	obieecdemo.huronconsultinggroup.com
72.10.182.74	A+PTR	tamusessprod.huronconsultinggroup.com
72.10.182.75	PTR	nyhsfdev.huronconsultinggroup.com
72.10.182.75	A+PTR	nuhsfdev.huronconsultinggroup.com
72.10.182.77	A	studereducation.com
72.10.182.84	A+PTR	tableau.inviewrx.com
72.10.182.86	A+PTR	mp1hauat01.huronconsultinggroup.com
72.10.182.86	A	www.9principles.com
72.10.182.87	A+PTR	mp1hawebp01.huronconsultinggroup.com
72.10.182.88	A+PTR	psft.huronconsultinggroup.com
72.10.182.88	A+PTR	mp1psft05.huronconsultinggroup.com
72.10.182.90	A+PTR	dhrsfuat.huronconsultinggroup.com
72.10.182.90	A+PTR	dhrcdiuat.huronconsultinggroup.com
72.10.182.91	PTR	dhrcdi.huronconsultinggroup.com
72.10.182.91	PTR	dhrsf.huronconsultinggroup.com
72.10.182.108	A+PTR	rumctest.huronconsultinggroup.com
72.10.182.111	A+PTR	jira.huronconsultinggroup.com
72.10.182.112	PTR	avks.huronclick.com
72.10.182.112	A+PTR	avks.huronconsultinggroup.com
72.10.182.161	PTR	unmcdiwebuat.huronconsultinggroup.com
72.10.182.161	PTR	unmworkflowuat.huronconsultinggroup.com
72.10.182.161	A+PTR	unmworkflow.huronconsultinggroup.com