Robtex

Up: 72.196.32.0/19
Can't show all results, try to descend to a more specific CIDR
Down left: 72.196.32.0/21
Down right: 72.196.40.0/21
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
72.196.34.2	PTR	voip72-196-34-2.mm.sd.sd.cox.net
72.196.36.65	PTR	voip72-196-36-65.mm.sd.sd.cox.net
72.196.36.112	PTR	voip72-196-36-112.mm.sd.sd.cox.net
72.196.40.54	PTR	mail.ideastage.com
72.196.40.54	A	paylesspromos.com
72.196.40.54	A	jsyconstruction.com
72.196.41.50	A+PTR	wsip-72-196-41-50.ri.ri.cox.net
72.196.44.75	A	spamfilter.phoenixkiosk.com
72.196.44.118	A	www.envriskpros.com
72.196.44.118	A	envioriskpros.com
72.196.44.118	A	pollutioncoverage.com
72.196.44.248	A	vcphx.bpce.com
72.196.45.71	A+PTR	wsip-72-196-45-71.ph.ph.cox.net
72.196.45.71	A	www.u-r-g.com
72.196.45.71	A	autopartssearch.com
72.196.45.75	PTR	wsip-72-196-45-75.ph.ph.cox.net
72.196.45.75	A	www.autopartsearch.com
72.196.45.75	A	urgpartsearch.com
72.196.45.76	PTR	wsip-72-196-45-76.ph.ph.cox.net
72.196.45.92	A	www.autopartsearch.com
72.196.45.92	A	urgpartsearch.com
72.196.45.92	A	mail.alltimehits.in
72.196.45.106	A+PTR	wsip-72-196-45-106.ph.ph.cox.net
72.196.45.110	PTR	cgelem.k12.az.us
72.196.45.115	A	mail.kristenmgreen.com
72.196.45.139	A+PTR	wsip-72-196-45-139.ph.ph.cox.net
72.196.45.139	A	haciendahealthcare.org
72.196.45.139	A	losninoshospital.com
72.196.45.182	A+PTR	wsip-72-196-45-182.ph.ph.cox.net
72.196.45.222	A+PTR	wsip-72-196-45-222.ph.ph.cox.net
72.196.45.243	PTR	wsip-72-196-45-243.ph.ph.cox.net
72.196.45.243	A	mailsvr.cruiseamerica.net
72.196.45.243	A	mailsvr.cruiseamerica.com
72.196.45.244	PTR	wsip-72-196-45-244.ph.ph.cox.net
72.196.46.2	PTR	wsip-72-196-46-2.ph.ph.cox.net
72.196.46.50	A+PTR	fbmx1.hq.brownies.com
72.196.46.50	A	hq.brownies.com
72.196.46.52	A	list.brownies.com
72.196.46.72	A	ex-mbcas2.ulthera.com
72.196.46.72	A	mail.ulthera.com
72.196.46.73	A	mail.ulthera.com
72.196.46.75	A	mail.ulthera.com
72.196.46.160	A+PTR	wsip-72-196-46-160.ph.ph.cox.net
72.196.46.160	A	mail.pdi-az.com
72.196.46.180	A	eroomsunhealthsl.org
72.196.46.182	A	sunhealthlibrary.org
72.196.46.185	A	sunhealthhelpdesk.org
72.196.47.22	PTR	wsip-72-196-47-22.ph.ph.cox.net
72.196.47.49	A	mail.azpir.org
72.196.47.67	PTR	staratechnologies.com
72.196.47.67	A	mail.miniairdrop.com
72.196.47.67	A	mail.staratechnologies.com
72.196.47.192	A+PTR	wsip-72-196-47-192.ph.ph.cox.net
72.196.47.192	A	smtp.netsiantech.net
72.196.47.192	A	mail.netsiantech.net
72.196.47.209	A+PTR	smtp.wilsonelectric.net
72.196.47.210	A	webmail.wilsonelectric.net
72.196.47.210	A	mail.netsian.net
72.196.47.210	A	mail.wilsonelectric.net
72.196.47.212	A	mail.wilsonelectric.net