Robtex

Up: 173.213.192.0/19
Can't show all results, try to descend to a more specific CIDR
Down left: 173.213.208.0/21
Down right: 173.213.216.0/21
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
173.213.208.232	A+PTR	altanyh232.nbcuni.com
173.213.210.202	A	nbcuose.com
173.213.212.138	A	ecmail.inbcu.com
173.213.212.141	A+PTR	anywhereec.nbcuni.com
173.213.212.142	A+PTR	anywhereeca.nbcuni.com
173.213.212.143	A+PTR	anywhereecb.nbcuni.com
173.213.212.151	A	nbcumail.wip.inbcu.com
173.213.212.228	A+PTR	altanyu228.nbcuni.com
173.213.212.229	A+PTR	altanyu229.nbcuni.com
173.213.212.231	A+PTR	altanyu231.nbcuni.com
173.213.212.232	A	altanyu232.nbcuni.com
173.213.212.245	PTR	altanyu245.nbcuni.com
173.213.212.246	PTR	altanyu246.nbcuni.com
173.213.212.247	PTR	altanyu247.nbcuni.com
173.213.213.40	A	universal-meetings.com
173.213.213.40	A	universalmeetingsandevents.com
173.213.213.40	A	uomeetingsandevents.com
173.213.213.41	A	universalevents.com
173.213.214.87	A	www.dailycandy.com
173.213.214.87	A	dailycandy.com
173.213.216.30	A	nbcuphotobankstg.nbcuni.com
173.213.216.55	A	wsaoassxscr012.nbcuni.com
173.213.216.57	A	strata2.nbcuni.com
173.213.216.57	A	wsaoaspxscr026.nbcuni.com
173.213.216.62	A	sportsevents.nbc.com
173.213.216.75	A	nbcuniversal.com
173.213.216.105	A	telemundopromo.com
173.213.216.105	A	telemundomarketing.com
173.213.216.129	A	devnbclearnportalpreview.nbclearn.com
173.213.216.139	A	anywhere.nbcuni.com.gtm.gecompany.com
173.213.216.139	A	anywhere.wip.nbcuni.com
173.213.216.139	A	anywherela.nbcuni.com
173.213.216.152	A	universalstudioschat.com
173.213.216.152	A	nbcunishortfilmfestival.com
173.213.216.152	A	nbcushortsfest.com
173.213.216.178	A	umdr.nbcuni.com
173.213.216.207	A	thetouratnbcstudios.com
173.213.216.207	A	www.thetouratnbcstudios.com
173.213.216.207	A	nbcstudiotour.com
173.213.216.212	A	nbcprogramprep.com
173.213.216.213	A	sportsevents.nbc.com
173.213.216.219	A	nbcuniarchives.com
173.213.216.219	A	nbcnewsarchives.com
173.213.216.253	A	ksts48.com
173.213.216.253	A	unid3.com
173.213.216.253	A	ktmd48.com
173.213.218.252	A	aptnewprod2.nbc.com
173.213.220.24	A	apt.wip.nbc.com