Robtex

Up: 72.5.208.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 72.5.208.0/22
Down right: 72.5.212.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
72.5.210.14	A	mail.ds-iq.com
72.5.210.14	A	owa.ds-iq.com
72.5.210.14	A	fs.ds-iq.com
72.5.210.15	A	secureb.ds-iq.com
72.5.210.16	A+PTR	oab.ds-iq.com
72.5.210.17	PTR	www.walmartsmartnetwork.com
72.5.210.17	A	op-adsb.ds-iq.com
72.5.210.34	A	smtp01.cranium.com
72.5.210.35	A	smtp02.cranium.com
72.5.210.35	A	mail.wirezap.com
72.5.210.35	A	mail.wirezap.net
72.5.210.49	A	commerce01.cranium.com
72.5.210.55	A	bloomtogether.com
72.5.210.55	A	bloomeveryday.com
72.5.210.55	A	whoonu.com
72.5.210.140	PTR	axcessmypics.com
72.5.210.142	PTR	as02.axcessmypics.com
72.5.210.243	A+PTR	mail.attlab.newbay.com
72.5.211.22	PTR	ucblearning.sumtotalsystems.com
72.5.211.22	A	ucbuniversity.com
72.5.211.24	A+PTR	solvaytestrm.sumtotalsystems.com
72.5.211.38	PTR	click2learn.com
72.5.211.38	PTR	www.geolearning.com
72.5.211.38	A+PTR	events.sumtotalsystems.com
72.5.211.42	A	www.lubricantsuniversity.com
72.5.211.68	A	rmp82sv01.sumtotalsystems.com
72.5.211.70	A	rms82sv01.sumtotalsystems.com
72.5.211.76	A	tdameritrade80stage.sumtotalsystems.com
72.5.211.84	A	baestage.sumtotalsystems.com
72.5.211.130	A	jhuapl.mvpfeedback.com
72.5.211.133	A	tpwp532sv01c.mvpfeedback.com
72.5.211.210	PTR	lehighvalley82.sumtotalsystems.com
72.5.212.31	A+PTR	mspmx.cloudrunner.com
72.5.212.71	A	bcms1-drac.sef003.internap.com
72.5.212.125	A	us.cdn.blizzard.com
72.5.212.126	A	us.cdn.blizzard.com
72.5.212.127	A	us.cdn.blizzard.com
72.5.212.128	A	us.cdn.blizzard.com
72.5.212.129	A	us.cdn.blizzard.com
72.5.212.130	A	us.cdn.blizzard.com
72.5.212.131	A	us.cdn.blizzard.com
72.5.212.132	A	us.cdn.blizzard.com
72.5.212.143	A	sea-ns201.worldwinner.com
72.5.212.144	A	sea-ns202.worldwinner.com
72.5.214.161	A	ns2.good.com