Robtex

Up: 72.20.16.0/22
Can't show all results, try to descend to a more specific CIDR
Down left: 72.20.16.0/24
Down right: 72.20.17.0/24
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
72.20.16.16	PTR	sense.safemod.net
72.20.16.16	A	mail.boksgomlegi.com
72.20.16.48	PTR
72.20.16.50	PTR	sense.safemod.net
72.20.16.50	A	sense.cesur.net
72.20.16.55	PTR	sense.safemod.net
72.20.16.79	A	hydra.lod.us
72.20.16.80	PTR
72.20.16.80	A	deneb.lod.us
72.20.16.81	PTR	sense.safemod.net
72.20.16.81	A	altair.lod.us
72.20.16.82	A	sirius.lod.us
72.20.16.83	A	orion.lod.us
72.20.16.84	A	polaris.lod.us
72.20.16.105	PTR
72.20.16.105	A	access.denied.org
72.20.16.129	PTR
72.20.16.139	PTR
72.20.16.146	PTR
72.20.16.146	A	hostmaster.diziizle.gen.tr
72.20.16.158	PTR
72.20.16.158	A	ns1.cvv.me
72.20.16.160	PTR	service.webajans.gen.tr
72.20.16.161	PTR	web0.flashbyte.us
72.20.16.164	PTR	web3.flashbyte.us
72.20.16.164	A	ns4.flashbyte.us
72.20.16.168	PTR	web7.flashbyte.us
72.20.16.172	A	flashtek.us
72.20.16.172	A	www.flashtek.us
72.20.16.175	PTR	service.webajans.gen.tr
72.20.16.176	PTR	protected.blockdos.net
72.20.16.177	PTR	protected.blockdos.net
72.20.16.177	A	dellusionary.com
72.20.16.177	A	druidspack.com
72.20.16.179	PTR	protected.blockdos.net
72.20.16.180	PTR	protected.blockdos.net
72.20.16.181	PTR	gaia.ca.us.sacredforest.com
72.20.16.182	PTR	protected.blockdos.net
72.20.16.183	PTR	mail.skralg.com
72.20.16.184	PTR	protected.blockdos.net
72.20.16.187	PTR	protected.blockdos.net
72.20.16.188	PTR	protected.blockdos.net
72.20.16.189	PTR	protected.blockdos.net
72.20.16.190	PTR	protected.blockdos.net
72.20.16.190	A	www.hyip-navigator.com
72.20.16.191	PTR	protected.blockdos.net
72.20.16.235	PTR	garkin.safemod.net
72.20.16.235	A	philotira.stalked.org
72.20.16.242	PTR	s2.nimhost.com
72.20.16.242	A	tracker2.indowebster.com
72.20.16.244	PTR	ns1.maxindo.net
72.20.16.244	A	ns2.indowebster.org
72.20.16.244	A	ns1.indowebster.org
72.20.16.245	PTR	s2.nimhost.com
72.20.16.246	PTR	s2.nimhost.com
72.20.17.2	PTR
72.20.17.11	PTR
72.20.17.11	A	loves.fireegl.com
72.20.17.13	PTR
72.20.17.41	PTR
72.20.17.50	PTR
72.20.17.57	PTR
72.20.17.72	PTR
72.20.17.75	PTR
72.20.17.80	PTR	72.20.17.80.staminus.net
72.20.17.82	PTR
72.20.17.98	PTR	72.20.17.98.staminus.net
72.20.17.98	A	myusuario.net
72.20.17.111	A	login.phalse.org
72.20.17.117	PTR
72.20.17.119	PTR
72.20.17.123	PTR
72.20.17.128	PTR
72.20.17.130	A	mail.hitgator.net
72.20.17.132	A	gsboao.com
72.20.17.134	PTR
72.20.17.134	A	h8688.com
72.20.17.138	PTR
72.20.17.141	A	zppxs.com
72.20.17.146	A	dgkjtc.com
72.20.17.147	PTR
72.20.17.147	A	dglhsy.com
72.20.17.149	A	hblxjd.com
72.20.17.156	PTR
72.20.17.156	A	qszszj.com
72.20.17.161	PTR
72.20.17.161	A	83kxw.com
72.20.17.164	PTR
72.20.17.166	A	hbpcyb.com
72.20.17.168	PTR
72.20.17.168	A	hhxgjs.com
72.20.17.175	A	tzxxmh.com
72.20.17.177	A	yscddj.com
72.20.17.178	A	ytgykj.com
72.20.17.180	A	zhkmd.com
72.20.17.181	A	26qu.com
72.20.17.182	A	365hulu.com
72.20.17.185	A	twzoie.com
72.20.17.185	A	*.40days40winners.com
72.20.17.188	A	yidasw.com
72.20.17.192	A	bjrcjh.com
72.20.17.193	A	ccmukui.com
72.20.17.197	A	svlcn.com
72.20.17.201	A	gxgwzs.com
72.20.17.205	A	rdr.hostcat.net
72.20.17.206	A	slrhy.com
72.20.17.208	A	come.seemycheese.com
72.20.17.208	A	tjxlymc.com
72.20.17.209	A	mail.luxuryvillastorent.net
72.20.17.209	A	tjygnh.com
72.20.17.210	A	u.hasnoskills.com
72.20.17.211	A	0532yhs.com
72.20.17.213	A	bejik.com
72.20.17.214	A	cfycjy.com
72.20.17.217	A	dghex.com
72.20.17.219	A	gmmeat.com
72.20.17.221	A	xamqgs.com
72.20.17.223	A	yohuo8.com
72.20.17.251	A	mabsc.com
72.20.17.252	A	dihjw.com
72.20.17.254	PTR	254.17.20.72.reverse.epicshells.com
72.20.17.254	A	lhsos.com