Robtex

Up: 72.15.128.0/18
Can't show all results, try to descend to a more specific CIDR
Down left: 72.15.160.0/20
Down right: 72.15.176.0/20
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
72.15.160.146	PTR	val2811.nebraska.edu
72.15.161.1	PTR	extrn-uno2.nebraska.edu
72.15.161.9	A+PTR	connect.doane.edu
72.15.161.14	PTR	oma7606uno-vlan800.nebraska.edu
72.15.161.97	PTR	extrn-krnfnd.nebraska.edu
72.15.164.32	PTR	pcp000568pcs.nebraska.edu
72.15.164.33	PTR	pcp000569pcs.nebraska.edu
72.15.164.34	PTR	pcp000570pcs.nebraska.edu
72.15.164.96	PTR	pcp000613pcs.nebraska.edu
72.15.164.135	PTR	pcp000674pcs.nebraska.edu
72.15.164.160	PTR	pcp000648pcs.nebraska.edu
72.15.164.162	PTR	pcp000650pcs.nebraska.edu
72.15.165.18	A+PTR	mail.thenicc.edu
72.15.165.18	A+PTR	thenicc.edu
72.15.166.200	A	mail.solshare.net
72.15.169.4	A	drupal.doane.edu
72.15.169.5	A+PTR	ob1.doane.edu
72.15.169.6	A	ist.doane.edu
72.15.169.14	A	olap.doane.edu
72.15.169.35	A+PTR	www.doane.edu
72.15.169.35	A	doane.edu
72.15.169.36	A	lifesize.doane.edu
72.15.169.37	A	nsfubuntu.doane.edu
72.15.169.97	A	preparetobethebest.com
72.15.169.97	A	www.clarksoncollege.edu
72.15.169.97	A	clarksoncollege.edu
72.15.170.33	PTR	vpn033csn.nebraska.edu
72.15.170.161	PTR	vpn161nu.nebraska.edu
72.15.171.13	A	mail.neccinfotech.com
72.15.173.10	A	ns1.mpcc.edu
72.15.173.11	A	ns2.mpcc.edu
72.15.173.19	A+PTR	email.mpcc.edu
72.15.173.42	A+PTR	pluto.mpcc.edu
72.15.174.2	A+PTR	buffett.nufoundation.org
72.15.174.129	A	jones.nufoundation.org
72.15.175.162	A	sctweb.northeastcollege.com
72.15.175.164	A+PTR	eiron.northeast.edu
72.15.175.165	A+PTR	eiron2.northeast.edu
72.15.175.179	A	ezproxy.northeast.edu
72.15.175.199	A	aapnebraska.com
72.15.175.199	A	mail.aapnebraska.org
72.15.175.199	A	aapnebraska.org
72.15.175.213	A	*.myelearning.org