Robtex

Up: 72.9.192.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 72.9.200.0/22
Down right: 72.9.204.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
72.9.200.0	A+PTR	0.200.9.72.static.ip.tnltd.net
72.9.200.50	A	mail01.burkecgi.com
72.9.200.222	A	mail.kgaarchitecture.com
72.9.200.222	A	mx1.kgaarchitecture.com
72.9.200.222	A	*.kgaarchitecture.com
72.9.201.0	A+PTR	0.201.9.72.static.ip.tnltd.net
72.9.201.110	A	mail.vegasgeneral.com
72.9.201.122	A+PTR	122.201.9.72.static.ip.tnltd.net
72.9.201.122	A	mail.outdooradventureslv.com
72.9.201.122	A	mail.artconlv.com
72.9.201.179	PTR	179.201.9.72.static.ip.tnltd.net
72.9.202.0	A+PTR	0.202.9.72.static.ip.tnltd.net
72.9.202.10	PTR	10.202.9.72.static.ip.tnltd.net
72.9.202.10	A	ns2.noaidstaskforce.net
72.9.202.27	A+PTR	27.202.9.72.static.ip.tnltd.net
72.9.202.53	A	53.202.9.72.static.ip.tnltd.net
72.9.202.57	A+PTR	57.202.9.72.static.ip.tnltd.net
72.9.202.58	A	mail.westcoastindustries.com
72.9.202.59	A+PTR	59.202.9.72.static.ip.tnltd.net
72.9.202.62	A	62.202.9.72.static.ip.tnltd.net
72.9.202.114	A	mail2.alversontaylor.com
72.9.202.114	A	mail.alversontaylor.com
72.9.202.115	A+PTR	115.202.9.72.static.ip.tnltd.net
72.9.202.135	A	135.202.9.72.static.ip.tnltd.net
72.9.202.139	A+PTR	139.202.9.72.static.ip.tnltd.net
72.9.202.165	A	165.202.9.72.static.ip.tnltd.net
72.9.202.180	A	180.202.9.72.static.ip.tnltd.net
72.9.202.195	PTR	mail.julietlasvegas.com
72.9.202.198	A	198.202.9.72.static.ip.tnltd.net
72.9.202.202	A+PTR	202.202.9.72.static.ip.tnltd.net
72.9.202.223	A	223.202.9.72.static.ip.tnltd.net
72.9.203.0	A+PTR	0.203.9.72.static.ip.tnltd.net
72.9.204.0	A+PTR	0.204.9.72.static.ip.tnltd.net
72.9.204.26	A+PTR	26.204.9.72.static.ip.tnltd.net
72.9.204.42	A	webmail.albrightstoddard.com
72.9.204.59	PTR	rc-mail.rallycapllc.com
72.9.204.66	A	mail.fibers-inc.com
72.9.204.92	A	92.204.9.72.static.ip.tnltd.net
72.9.204.251	A+PTR	251.204.9.72.static.ip.tnltd.net
72.9.205.0	A+PTR	0.205.9.72.static.ip.tnltd.net
72.9.205.90	A	mail.fullhouseresorts.com
72.9.205.186	A	ms1.krispykremes.net
72.9.205.210	A	mail.thomas-mack.com
72.9.206.0	A+PTR	0.206.9.72.static.ip.tnltd.net
72.9.206.4	A	klas5.sip.tnltd.net
72.9.207.0	A+PTR	0.207.9.72.static.ip.tnltd.net
72.9.207.19	A+PTR	19.207.9.72.static.ip.tnltd.net
72.9.207.24	PTR	24.207.9.72.static.ip.tnltd.net
72.9.207.37	A	37.207.9.72.static.ip.tnltd.net
72.9.207.65	A+PTR	65.207.9.72.static.ip.tnltd.net
72.9.207.70	A	70.207.9.72.static.ip.tnltd.net
72.9.207.127	A	127.207.9.72.static.ip.tnltd.net
72.9.207.132	A	132.207.9.72.static.ip.tnltd.net
72.9.207.136	A+PTR	136.207.9.72.static.ip.tnltd.net
72.9.207.149	A	149.207.9.72.static.ip.tnltd.net
72.9.207.157	A	157.207.9.72.static.ip.tnltd.net
72.9.207.174	A	174.207.9.72.static.ip.tnltd.net
72.9.207.175	A	175.207.9.72.static.ip.tnltd.net
72.9.207.182	A	182.207.9.72.static.ip.tnltd.net
72.9.207.198	A	198.207.9.72.static.ip.tnltd.net
72.9.207.216	A+PTR	216.207.9.72.static.ip.tnltd.net
72.9.207.241	A+PTR	241.207.9.72.static.ip.tnltd.net