Robtex

Up: 209.83.0.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 209.83.8.0/22
Down right: 209.83.12.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
209.83.8.1	A+PTR	ns2.ptwi.com
209.83.8.2	PTR	server1.cyfi.com
209.83.8.2	A+PTR	ns1.ptwi.com
209.83.8.2	A	www.douchebagpoker.com
209.83.8.4	A	chumplet.badgerinternet.com
209.83.8.8	A+PTR	bandoog.com
209.83.8.9	A	callcenter.esiwi.com
209.83.8.11	A	www2.badgerinternet.com
209.83.8.12	A	spam-2.bandoog.com
209.83.8.16	PTR	www.badgerinternet.com
209.83.8.16	A	www.sinisterfunkhouse.com
209.83.8.16	A	www.ptwi.net
209.83.8.20	PTR	backup.cyfi.com
209.83.8.26	PTR	mail.merr.com
209.83.8.27	PTR	bandoog.com
209.83.8.28	A	mail.matchupmachine.com
209.83.8.29	A	donmillermail.badgerinternet.com
209.83.8.32	A	middleton.badgerinternet.com
209.83.8.33	PTR	mail.marquardtvillage.org
209.83.8.36	A	mail.harbourinv.com
209.83.8.44	A+PTR	relay.ywcamadison.org
209.83.8.46	A	mail.eswansonlaw.com
209.83.8.46	A	farin.badgerinternet.com
209.83.8.47	A	mail.lodicanning.com
209.83.8.50	A	mail.skyhighcampingresort.com
209.83.8.51	A	mail.wi-ei.org
209.83.8.55	A	wbmail.badgerinternet.com
209.83.8.55	A	mail.byrdspub.com
209.83.8.57	A+PTR	mail.wetainc.org
209.83.8.63	A	mail.greenproductions.com
209.83.8.69	A	mail.jensenph.com
209.83.8.74	A	mail.kbk-cpa.com
209.83.8.77	A	mail.jkhackl.com
209.83.8.88	PTR	mail.dbpoker.com
209.83.8.98	A	relay.jvlnet.com
209.83.8.99	A	filtermail.badgerinternet.com
209.83.8.100	PTR	mail.badgerinternet.com
209.83.8.100	A	mail.newglarus.org
209.83.8.100	A	mail.skogenengineering.com
209.83.8.186	A	mail.esiwi.com
209.83.8.205	A	badger-222-pix-1.badgerinternet.com
209.83.8.213	A	core-router.badgerinternet.com
209.83.8.214	A+PTR	badger.badgerinternet.com
209.83.8.214	A	outbound.badgerinternet.com
209.83.8.218	A	ml.badgerinternet.com
209.83.8.230	PTR	email.geoanalytics.com
209.83.9.2	PTR	pcons.com
209.83.9.17	PTR	brig12.merr.com
209.83.9.26	PTR	brig21.merr.com
209.83.9.96	PTR	pack27.merr.com
209.83.10.49	A	mail.roughageriders.com
209.83.10.177	A+PTR	dial29.jefferson.ptwi.net
209.83.11.17	PTR	md12.merr.com
209.83.11.64	PTR	md59.merr.com
209.83.11.98	PTR	md93.merr.com
209.83.11.186	PTR	mad53.merr.com
209.83.11.195	PTR	mad62.merr.com
209.83.11.225	PTR	mad92.merr.com
209.83.12.1	A+PTR	gateway.merr.com
209.83.12.2	A	rdmerrtr.merr.com
209.83.12.3	A+PTR	merrnmc.merr.com
209.83.12.4	A	pamerrtr.merr.com
209.83.12.8	A+PTR	domanique.merr.com
209.83.12.9	A	oral.merr.com
209.83.12.10	A+PTR	ntserver.shopstop.net
209.83.12.11	A	mernmc.merr.com
209.83.12.17	A+PTR	mail.shopstop.net
209.83.12.18	PTR	mail.free
209.83.12.19	A	mail.softwiredsystems.com
209.83.12.20	A	mail.orionls.com
209.83.12.21	A	mail.merr.com
209.83.12.24	A+PTR	mail.terracom.net
209.83.12.28	A	mail.bunchengineering.com
209.83.12.29	A	mail.cedarcreekwinery.com
209.83.12.33	A+PTR	mail.merrconserve.com
209.83.12.35	A	gopostal.merr.com
209.83.12.36	PTR	mail.free
209.83.12.45	A	mail.jbbuild.com
209.83.12.49	A+PTR	mail.saukfire.com
209.83.12.52	A	mail.gollmar.com
209.83.12.56	A	mail.watertowercleanandcoat.com
209.83.12.60	A+PTR	mail.wollersheim.com
209.83.12.63	A	brmerrtr.merr.com
209.83.12.64	A+PTR	sgmerrtr.merr.com
209.83.12.65	PTR	www.renewinglife.org
209.83.12.74	A	demo.merr.com
209.83.12.84	A	ws84.merr.com
209.83.12.104	PTR	www.checkrentals.com
209.83.12.124	PTR	mail.free
209.83.12.125	PTR	mail.free
209.83.12.129	PTR	www.free
209.83.12.130	PTR	mail.merr.com
209.83.12.132	PTR	mail.free
209.83.12.134	A	mail.microbalance.com
209.83.12.138	PTR	mail.free
209.83.12.146	PTR	mail.free
209.83.12.161	PTR	www.cswab.org
209.83.12.168	PTR	mail.free
209.83.12.170	A	mail.prairiedigital.com
209.83.12.178	PTR	mail.free
209.83.12.180	A+PTR	bandoog.com
209.83.12.186	A+PTR	mail.leystrasventurerestaurant.com
209.83.12.190	A	bandoog.com
209.83.12.200	A+PTR	pix.merr.com
209.83.12.203	PTR	mail.free
209.83.12.203	A	mail.villageofmerrimac.org
209.83.12.211	PTR	mail.free
209.83.12.217	PTR	mail.free
209.83.12.219	A	mail.usfnow.com
209.83.12.235	A	domino.merr.com
209.83.12.236	A	radish.merr.com
209.83.12.238	A	lazarus.merr.com
209.83.12.239	A	merexprtr.merr.com
209.83.12.240	A	admerrtr.merr.com
209.83.12.241	A	domerrtr.merr.com
209.83.12.242	A+PTR	rcmerrtr.merr.com
209.83.12.243	A	merswitch.merr.com
209.83.13.181	A	jvl-cisco-181.jvlnet.com
209.83.14.42	PTR	jvl-cisco2-42.jvlnet.com
209.83.14.57	PTR	jvl-cisco2-57.jvlnet.com
209.83.14.138	PTR	jvl-cisco2-138.jvlnet.com
209.83.14.145	PTR	jvl-cisco2-145.jvlnet.com
209.83.14.187	PTR	jvl-cisco2-187.jvlnet.com
209.83.14.193	PTR	jvl-cisco2-193.jvlnet.com
209.83.15.6	PTR	merri01.merr.com
209.83.15.24	PTR	merri19.merr.com
209.83.15.96	PTR	pa27.merr.com
209.83.15.107	PTR	pa38.merr.com
209.83.15.115	PTR	pa46.merr.com
209.83.15.130	PTR	mail.total-water.com