Robtex

Up: 67.52.40.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 67.52.44.0/23
Down right: 67.52.46.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
67.52.44.10	PTR	rrcs-67-52-44-10.west.biz.rr.com
67.52.44.28	PTR	rrcs-67-52-44-28.west.biz.rr.com
67.52.44.28	A	smd1.info
67.52.44.28	A	savemydocs.com
67.52.44.50	PTR	mail.techsquad.us
67.52.44.51	PTR	rrcs-67-52-44-51.west.biz.rr.com
67.52.44.51	A	mail1.seii.com
67.52.44.54	A	poverellocreations.org
67.52.44.56	PTR	rrcs-67-52-44-56.west.biz.rr.com
67.52.44.56	A	www.believersweb.org
67.52.44.56	A	believersweb.org
67.52.44.82	A+PTR	rrcs-67-52-44-82.west.biz.rr.com
67.52.44.90	A	mail.wolfpaving.com
67.52.44.139	A	mail.creative-imprint.com
67.52.44.139	A	mail.bergstrompromotions.com
67.52.44.139	A	mail.wolfmarkties.com
67.52.44.144	PTR	rrcs-67-52-44-144.west.biz.rr.com
67.52.44.158	PTR	rrcs-67-52-44-158.west.biz.rr.com
67.52.44.158	A	mail.janlaw.com
67.52.44.158	A	racine.janlaw.com
67.52.45.18	A	phoenixnt.net
67.52.45.19	PTR	host19.phoenixproducts.com
67.52.45.19	A	connect.phoenixproducts.com
67.52.45.29	PTR	rrcs-67-52-45-29.west.biz.rr.com
67.52.45.36	A	mail.pegasusautoracing.com
67.52.45.38	A+PTR	rrcs-67-52-45-38.west.biz.rr.com
67.52.45.38	A	pegasusar.com
67.52.45.38	A	qualityhardware.net
67.52.45.52	PTR	www.hypro.com
67.52.45.52	A	hypro.com
67.52.45.54	A+PTR	mail.hypro.com
67.52.45.59	PTR	rrcs-67-52-45-59.west.biz.rr.com
67.52.45.60	PTR	rrcs-67-52-45-60.west.biz.rr.com
67.52.45.60	A	hypro.com
67.52.45.66	A	remote.dalor.com
67.52.45.75	A	mail.rockmachinery.com
67.52.45.75	A	exchange.rockmachinery.com
67.52.45.131	PTR	rrcs-67-52-45-131.west.biz.rr.com
67.52.45.132	A	ns2.centrisys-corp.net
67.52.45.134	A	barracuda.centrisys.us
67.52.45.134	A	barracuda.cnp-tec.com
67.52.45.134	A	barracuda.centrisys.com
67.52.45.137	A	mail-backup.centrisys.us
67.52.45.138	A	ns2.centrisys.info
67.52.45.138	A	ns1.centrisys.info
67.52.45.138	A	centrisys.info
67.52.45.140	A	centrisyscrm.com
67.52.45.148	A	brethorst.com
67.52.45.182	PTR	rrcs-67-52-45-182.west.biz.rr.com
67.52.45.182	A	remote.hofbauerlaw.com
67.52.45.182	A	mail11.hofbauerlaw.com
67.52.45.195	A	mail.millercompressing.com
67.52.45.250	A	mail.srchoicemgt.com
67.52.45.254	A	mail.closetconcepts.com
67.52.46.10	A	mail.rohdebros.com
67.52.46.10	A	mail.gwsmllc.com
67.52.46.19	A	mail.adronedm.com
67.52.46.19	A	mail.adron.com
67.52.46.20	PTR	rrcs-67-52-46-20.west.biz.rr.com
67.52.46.20	A	barracuda.adronedm.com
67.52.46.90	A	mail.milagt.com
67.52.46.101	PTR	rrcs-67-52-46-101.west.biz.rr.com
67.52.46.138	A+PTR	rrcs-67-52-46-138.west.biz.rr.com
67.52.46.170	PTR	rrcs-67-52-46-170.west.biz.rr.com
67.52.46.170	A	mx.springcreekonline.com
67.52.46.170	A	mail.springcreekonline.org
67.52.46.187	PTR	ns1.cornerstonecs.com
67.52.46.228	A	4cenergycontrolsolutions.com
67.52.46.228	A	remote.4celec.com
67.52.47.64	A	mail.mythcoding.com
67.52.47.66	PTR	mail.aaman.com
67.52.47.66	A	ns2.easythunder.com
67.52.47.68	PTR	orion.coppercore.net
67.52.47.68	A	ns2.etmalec.net
67.52.47.69	PTR	foo.bz
67.52.47.84	PTR	rrcs-67-52-47-84.west.biz.rr.com
67.52.47.110	A+PTR	smtp.mksc.org
67.52.47.166	PTR	rrcs-67-52-47-166.west.biz.rr.com
67.52.47.166	A	mail.jackbrassband.com
67.52.47.166	A	noticemusic.com
67.52.47.178	PTR	rrcs-67-52-47-178.west.biz.rr.com