Robtex

Up: 72.5.216.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 72.5.216.0/23
Down right: 72.5.218.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
72.5.216.236	A	www.optinretailmail.com
72.5.217.20	A	mobile.seattleopera.org
72.5.217.23	PTR	www.siff.net
72.5.217.24	A	*.psfilmfest.org
72.5.217.24	A	mail1.psfilmfest.org
72.5.217.24	A	psfilmfest.org
72.5.217.26	A	dailies.denverfilm.org
72.5.217.30	A	luminate.net
72.5.217.32	A+PTR	rohektrontest.pop.us
72.5.217.37	PTR	www.raleighusa.com
72.5.217.38	PTR	www.diamondback.com
72.5.217.40	A	ea.pop.us
72.5.217.41	A	leye-staging.pop.us
72.5.217.49	A	morcucorp.com
72.5.217.49	A	www.morcucorp.com
72.5.217.50	A	lettuceentertainyou.com
72.5.217.50	A	www.lettuceentertainyou.com
72.5.217.51	PTR	www.blossomfestival.com
72.5.217.51	PTR	www.clevelandorch.com
72.5.217.51	PTR	www.clevelandorchestra.com
72.5.217.52	A	admin.clevelandorchestra.com
72.5.217.54	A	redhookfantasyfootball.com
72.5.217.56	PTR	www.popagency.com
72.5.217.56	A	luminate.net
72.5.217.56	A	popseattle.com
72.5.217.60	A	primeoutlets.pop.us
72.5.217.65	PTR	www.civicoperahouse.com
72.5.217.78	A	swedishphysicians.com
72.5.217.78	A	swedishphysicians.org
72.5.217.78	A	www.swedishphysicians.com
72.5.217.83	A	pop-seattle.net
72.5.217.91	A	mail2.pop.us
72.5.217.95	A	cloudtix.com
72.5.217.165	A	seattlereignacademy.com
72.5.217.166	A	premiumsupport.pop.us
72.5.217.196	A+PTR	pro-vs-smtp1.popmultimedia.com
72.5.217.196	A	smtp.experiencepop.com
72.5.217.197	PTR	pro-vs-lamp1.pop.us
72.5.217.197	A	takepartinart.org
72.5.217.197	A	www.takepartinart.org
72.5.217.198	PTR	urchin.pop.us
72.5.217.200	A+PTR	staging.pop.us
72.5.217.200	A	wearepop.com
72.5.217.201	A+PTR	pro-vs-leyelamp1.pop.us
72.5.217.201	A	www2.wordfly.com
72.5.217.204	A	cloudtickets.us
72.5.217.204	A	expresstix.org
72.5.217.204	A	cloudtickets.mobi
72.5.217.206	A	takepartinart.org
72.5.217.211	A	dailies.denverfilm.org
72.5.217.214	A	secure.denverfilm.org
72.5.217.215	A	cloudtix.com
72.5.217.215	A	www.cloudtix.com
72.5.217.222	A+PTR	pro-mail.pop.us
72.5.217.225	PTR	corp-vs-uc-vcsedge.popagency.com
72.5.217.229	A	extranet.popseattle.com
72.5.217.230	A	preview2.popseattle.com
72.5.217.232	A+PTR	webmail.popagency.com
72.5.217.241	A+PTR	mail.pop.us
72.5.217.241	A	pop-seattle.com
72.5.217.241	A	smtp.pop.us
72.5.217.243	PTR	corp-vid2.pop.us
72.5.217.249	A	spartan.pop.us