Robtex

Up: 72.211.0.0/18
Can't show all results, try to descend to a more specific CIDR
Down left: 72.211.0.0/20
Down right: 72.211.16.0/20
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
72.211.0.0	A+PTR	ip72-211-0-0.ok.ok.cox.net
72.211.11.178	A	mta0015d0132d28.mm.ks.ks.cox.net
72.211.12.21	A+PTR	ip72-211-12-21.ok.ok.cox.net
72.211.15.68	A+PTR	ip72-211-15-68.ok.ok.cox.net
72.211.15.68	A	sdg.co
72.211.15.76	A+PTR	ip72-211-15-76.ok.ok.cox.net
72.211.15.76	A	kkesler.com
72.211.18.134	PTR	wsip-72-211-18-134.ph.ph.cox.net
72.211.18.145	A+PTR	wsip-72-211-18-145.ph.ph.cox.net
72.211.18.145	A	diregames.com
72.211.18.145	A	macomber.org
72.211.19.198	A	mta001596fc405d.mm.ks.ks.cox.net
72.211.19.228	A+PTR	wsip-72-211-19-228.ph.ph.cox.net
72.211.20.62	A	wsip-72-211-20-62.ph.ph.cox.net
72.211.20.118	A	wsip-72-211-20-118.ph.ph.cox.net
72.211.20.238	A	wsip-72-211-20-238.ph.ph.cox.net
72.211.20.241	A	wsip-72-211-20-241.ph.ph.cox.net
72.211.21.213	A+PTR	wsip-72-211-21-213.ph.ph.cox.net
72.211.21.213	A	randmsystems.com
72.211.22.51	A	wsip-72-211-22-51.ph.ph.cox.net
72.211.24.36	A+PTR	wsip-72-211-24-36.oc.oc.cox.net
72.211.24.36	A	jumpstartleads.com
72.211.24.66	A+PTR	wsip-72-211-24-66.oc.oc.cox.net
72.211.24.66	A	200spectrumctr.com
72.211.25.91	A	mail.thecourtneygroup.com
72.211.26.27	A	wsip-72-211-26-27.oc.oc.cox.net
72.211.26.69	A	wsip-72-211-26-69.oc.oc.cox.net
72.211.26.79	A	wsip-72-211-26-79.oc.oc.cox.net
72.211.26.107	A	wsip-72-211-26-107.oc.oc.cox.net
72.211.26.126	A	wsip-72-211-26-126.oc.oc.cox.net
72.211.26.211	A	exchange.bpadvisors.com
72.211.27.181	A	wsip-72-211-27-181.oc.oc.cox.net
72.211.28.1	A	myf1admin.com
72.211.28.3	A	opencloudsolutions.tech
72.211.28.4	A	w3engineeringinc.com
72.211.28.5	A	ybillboard.com
72.211.29.146	A+PTR	wsip-72-211-29-146.pn.at.cox.net
72.211.29.146	A	inteltechsys.net
72.211.30.46	A	wsip-72-211-30-46.pn.at.cox.net
72.211.30.58	A	wsip-72-211-30-58.pn.at.cox.net
72.211.30.84	A	wsip-72-211-30-84.pn.at.cox.net
72.211.30.87	A	wsip-72-211-30-87.pn.at.cox.net
72.211.30.103	A	mail.moretteco.com
72.211.30.175	A	wsip-72-211-30-175.pn.at.cox.net
72.211.30.197	A	wsip-72-211-30-197.pn.at.cox.net
72.211.30.209	A	wsip-72-211-30-209.pn.at.cox.net
72.211.30.237	A	gkassoc.com
72.211.31.52	A	wsip-72-211-31-52.pn.at.cox.net
72.211.31.66	A+PTR	wsip-72-211-31-66.pn.at.cox.net
72.211.31.197	A	wsip-72-211-31-197.pn.at.cox.net