Robtex

Up: 72.20.24.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 72.20.28.0/23
Down right: 72.20.30.0/23

IP	Type	Hostname
72.20.28.1	PTR	72.20.28.1.staminus.net
72.20.28.2	PTR	72.20.28.2.staminus.net
72.20.28.3	PTR	72.20.28.3.staminus.net
72.20.28.4	PTR	72.20.28.4.staminus.net
72.20.28.5	PTR	72.20.28.5.staminus.net
72.20.28.6	PTR	72.20.28.6.staminus.net
72.20.28.7	PTR	72.20.28.7.staminus.net
72.20.28.8	PTR	72.20.28.8.staminus.net
72.20.28.11	PTR	72.20.28.11.staminus.net
72.20.28.12	PTR	72.20.28.12.staminus.net
72.20.28.14	PTR	72.20.28.14.staminus.net
72.20.28.15	PTR	72.20.28.15.staminus.net
72.20.28.20	A	i.hacked.the.inter.n3t.cn
72.20.28.22	PTR	72.20.28.22.staminus.net
72.20.28.54	PTR
72.20.28.63	PTR
72.20.28.112	PTR	72.20.28.112.staminus.net
72.20.28.116	PTR
72.20.28.116	A	kuwaitstaff.slayer.ca
72.20.28.126	PTR
72.20.28.165	A	box.observers.net
72.20.28.181	A	electricliquid.org
72.20.28.189	A	eight-ball.org
72.20.28.220	PTR
72.20.28.220	A	i.will.get.to.it.cx
72.20.28.236	PTR	72.20.28.236.staminus.net
72.20.28.244	PTR
72.20.29.1	PTR	72.20.29.1.staminus.net
72.20.29.218	PTR
72.20.30.11	PTR
72.20.30.53	PTR
72.20.30.54	A	sells.irc-sluts.de
72.20.30.55	A	owns.irc-sluts.de
72.20.30.56	PTR
72.20.30.56	A	fucks.irc-sluts.de
72.20.30.72	A	very.unstable.dk
72.20.30.74	A	dangerously.unstable.dk
72.20.30.84	A	supreme.bitch.tc
72.20.30.85	PTR
72.20.30.85	A	sexy.bitch.tc
72.20.30.86	A	slutty.bitch.tc
72.20.30.119	PTR
72.20.30.126	PTR
72.20.30.126	A	mail.falcon-networks.com
72.20.30.178	PTR
72.20.30.188	PTR
72.20.30.195	PTR
72.20.30.205	PTR	dedicated.koddos.com
72.20.30.206	PTR	dedicated.koddos.com
72.20.30.232	A	highly.unstable.dk
72.20.30.233	PTR
72.20.30.233	A	unstable.dk
72.20.30.242	PTR
72.20.30.244	PTR
72.20.30.244	A	qzw.com
72.20.30.254	PTR
72.20.31.2	A	viper.falcon-networks.com
72.20.31.34	A	lequ888.com
72.20.31.37	A	pimps.irc-sluts.de
72.20.31.40	PTR
72.20.31.40	A	sexy.irc-sluts.de
72.20.31.70	A	hacker.micros0ft.ro
72.20.31.84	A	stoned.bitch.tc
72.20.31.85	A	evil.bitch.tc
72.20.31.86	A	elite.bitch.tc
72.20.31.99	A	extremely.unstable.dk
72.20.31.100	A	majorly.unstable.dk
72.20.31.102	PTR	72.20.31.102.staminus.net
72.20.31.105	PTR
72.20.31.113	PTR
72.20.31.131	PTR
72.20.31.131	A	www.gz67.com
72.20.31.240	PTR