Robtex

Up: 64.72.100.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 64.72.101.0/25
Down right: 64.72.101.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
64.72.101.2	A	ip-64-72-101-2.lasvegas.net
64.72.101.3	A	athometraining.frontsight.com
64.72.101.4	A	frontsightstaff.net
64.72.101.6	A+PTR	ip-64-72-101-6.lasvegas.net
64.72.101.6	A	frontsightvendors.net
64.72.101.8	PTR	ip-64-72-101-8.lasvegas.net
64.72.101.8	A	tasteoffrontsight.com
64.72.101.8	A	myfrontsight.com
64.72.101.15	PTR	mail1.ci.pomona.ca.us
64.72.101.18	A+PTR	ip-64-72-101-18.lasvegas.net
64.72.101.20	A	ip-64-72-101-20.lasvegas.net
64.72.101.36	PTR	ip-64-72-101-36.lasvegas.net
64.72.101.36	A	melaninmusic.com
64.72.101.37	A+PTR	ip-64-72-101-37.lasvegas.net
64.72.101.37	A	1x1513.com
64.72.101.37	A	tinadarby.com
64.72.101.66	A+PTR	ip-64-72-101-66.lasvegas.net
64.72.101.66	A	roseman.edu
64.72.101.122	A+PTR	ip-64-72-101-122.lasvegas.net
64.72.101.134	A+PTR	ip-64-72-101-134.lasvegas.net
64.72.101.134	A	root.4i4.net
64.72.101.135	A	ip-64-72-101-135.lasvegas.net
64.72.101.139	A+PTR	ip-64-72-101-139.lasvegas.net
64.72.101.141	A+PTR	ip-64-72-101-141.lasvegas.net
64.72.101.141	A	theamesco.com
64.72.101.145	PTR	ip-64-72-101-145.lasvegas.net
64.72.101.145	A	netlatitude.com
64.72.101.145	A	kapaluaoceanfront.com
64.72.101.149	PTR	ip-64-72-101-149.lasvegas.net
64.72.101.149	A	kapaluaoceanfront.com
64.72.101.149	A	ns3.netlatitude.com
64.72.101.150	A+PTR	ip-64-72-101-150.lasvegas.net
64.72.101.162	A+PTR	smtp1.jobdiagnosis.com
64.72.101.162	A	ip-64-72-101-162.lasvegas.net
64.72.101.164	A	smtp3.jobdiagnosis.com
64.72.101.206	PTR	smtp5.scholarshipview.com
64.72.101.208	PTR	smtp7.scholarshipview.com
64.72.101.222	A	mailer.employmentalert.com
64.72.101.225	PTR	smtp4.careerquill.com
64.72.101.227	A+PTR	smtp3-3.mailer.employmentalert.com
64.72.101.233	A+PTR	smtp3-7.mailer.employmentalert.com