Robtex

Up: 216.80.64.0/18
Can't show all results, try to descend to a more specific CIDR
Down left: 216.80.64.0/20
Down right: 216.80.80.0/20
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
216.80.64.2	A+PTR	sheratonips03.s.subnet.rcn.com
216.80.64.5	A	sheratonips06.s.subnet.rcn.com
216.80.64.21	A	sheratonips22.s.subnet.rcn.com
216.80.64.75	A	sheratonips76.s.subnet.rcn.com
216.80.64.87	A	sheratonips88.s.subnet.rcn.com
216.80.64.121	A	sheratonips122.s.subnet.rcn.com
216.80.64.150	A	sheratonips151.s.subnet.rcn.com
216.80.64.169	A	sheratonips170.s.subnet.rcn.com
216.80.64.181	A	sheratonips182.s.subnet.rcn.com
216.80.64.219	A	sheratonips220.s.subnet.rcn.com
216.80.64.237	A	sheratonips238.s.subnet.rcn.com
216.80.64.238	A	sheratonips239.s.subnet.rcn.com
216.80.64.247	A	sheratonips248.s.subnet.rcn.com
216.80.64.251	A	sheratonips252.s.subnet.rcn.com
216.80.65.2	A	sheratonips03.s.subnet.rcn.com
216.80.65.5	A	sheratonips06.s.subnet.rcn.com
216.80.65.21	A	sheratonips22.s.subnet.rcn.com
216.80.65.75	A	sheratonips76.s.subnet.rcn.com
216.80.65.87	A	sheratonips88.s.subnet.rcn.com
216.80.65.121	A	sheratonips122.s.subnet.rcn.com
216.80.65.150	A	sheratonips151.s.subnet.rcn.com
216.80.65.169	A	sheratonips170.s.subnet.rcn.com
216.80.65.181	A	sheratonips182.s.subnet.rcn.com
216.80.65.219	A	sheratonips220.s.subnet.rcn.com
216.80.65.237	A	sheratonips238.s.subnet.rcn.com
216.80.65.238	A	sheratonips239.s.subnet.rcn.com
216.80.65.247	A	sheratonips248.s.subnet.rcn.com
216.80.65.251	A	sheratonips252.s.subnet.rcn.com
216.80.66.81	A	bdl1.nwb-cbr1.chi-nwb.il.cable.rcn.net
216.80.66.98	A	mx.thelakotagroup.com
216.80.66.123	A	sgcaptrading.com
216.80.66.185	A	bdl1.stk-cbr2.chi-stk.il.cable.rcn.net
216.80.66.193	PTR	static.rcn.com
216.80.66.193	A	bdl1.nwb-cbr1.chi-nwb.il.cable.rcn.net
216.80.66.201	A	bdl1.nwb-cbr1.chi-nwb.il.cable.rcn.net
216.80.67.32	A+PTR	216-80-67-32.il.subnet.cable.rcncustomer.com
216.80.67.77	A	titanrss.com
216.80.67.129	PTR	216-80-67-129.il.subnet.cable.rcncustomer.com
216.80.67.130	PTR	216-80-67-130.il.subnet.cable.rcncustomer.com
216.80.67.169	A	bdl1.demp-cbr1.chi-demp.il.cable.rcn.net
216.80.67.217	A	216-80-67-217.il.subnet.cable.rcncustomer.com
216.80.68.22	A	solagrouprealty.com
216.80.68.26	A	mail2011.mabcap.com
216.80.68.34	A	cheeryland.com
216.80.68.154	A	server.jodymichael.com
216.80.68.162	PTR	216-80-68-162.il.subnet.cable.rcn.com
216.80.68.202	A	216-80-68-202.il.subnet.cable.rcncustomer.com
216.80.69.132	A	vanillacust.com
216.80.69.229	A	mail.nativefoods.com
216.80.69.243	A	tgrwa.com
216.80.69.243	A	*.tgrwa.com
216.80.69.244	A	mail.tgrwa.com
216.80.70.10	A	ns11.hostingexpert.com
216.80.70.10	A	havok.hostingexpert.com
216.80.70.11	A	ns12.hostingexpert.com
216.80.70.20	A	ns1.mikatao.com
216.80.70.40	A	ns41.hostingexpert.com
216.80.70.41	A	ns42.hostingexpert.com
216.80.70.50	A	ns1.sapgrp.com
216.80.70.51	A	ns2.sapgrp.com
216.80.70.162	A	foodanimalconcernstrust.com
216.80.70.162	A	farmersandconsumerstogether.org
216.80.70.162	A	familyfarming.org
216.80.71.30	A	winnona.com
216.80.71.30	A	florin.name
216.80.71.37	A	util-evzon.util-it.com
216.80.71.38	A	mail.conventionconnection.com
216.80.71.38	A	mail.conventionstaffing.com
216.80.71.38	A	mail.traveldirectors.com
216.80.71.101	A	allertonips06.a.subnet.rcn.com
216.80.71.229	A	publichcips06.p.subnet.rcn.com
216.80.72.4	A	nilesips05.n.subnet.rcn.com
216.80.72.31	A	nilesips32.n.subnet.rcn.com
216.80.72.31	A	ns.niles-hs.k12.il.us
216.80.72.38	A	crs.niles-hs.k12.il.us
216.80.72.56	A	fmpserver.niles-hs.k12.il.us
216.80.72.63	A	gsso.niles-hs.k12.il.us
216.80.72.71	A	ns2.super-mail.net
216.80.72.137	A	ec.ala.org
216.80.72.139	A	www.lita.org
216.80.72.139	A	pla.org
216.80.72.139	A	lita.org
216.80.72.194	A	smtp.ala.org
216.80.72.194	A	tcseducation67.t.subnet.rcn.com
216.80.72.194	A	ala1.ala.org
216.80.72.196	A	gamingandlibraries.org
216.80.72.229	A	staging.ala.org
216.80.72.239	A	tcseducation112.t.subnet.rcn.com
216.80.72.244	A	aladcweb.alawash.org
216.80.72.244	A	*.alawash.org
216.80.73.50	A	smtp1.jbrealty.com
216.80.73.50	A	mail.bmlawllp.com
216.80.73.113	A	bdl1.grn-cbr2.chi-grn.il.cable.rcn.net
216.80.73.130	A+PTR	den.cyberleo.net
216.80.73.130	A	home.cyberleo.net
216.80.73.130	A	test.cyberleo.net
216.80.73.145	A	bdl1.stk-cbr2.chi-stk.il.cable.rcn.net
216.80.73.201	A	bdl1.nwb-cbr1.chi-nwb.il.cable.rcn.net
216.80.75.5	A	jetpackadvertising.com
216.80.75.5	A	c.ns.interland.net.orba.com
216.80.75.34	A+PTR	mbiratech203.m.subnet.rcn.com
216.80.75.43	A+PTR	mbiratech212.m.subnet.rcn.com
216.80.75.60	A+PTR	mbiratech229.m.subnet.rcn.com
216.80.75.66	A+PTR	ncsa203.n.subnet.rcn.com
216.80.75.68	A+PTR	ncsa205.n.subnet.rcn.com
216.80.75.69	A+PTR	ncsa206.n.subnet.rcn.com
216.80.75.69	A	ncsaspots.com
216.80.75.71	PTR	ncsa208.n.subnet.rcn.com
216.80.75.230	A	mail.chicagoinspectorgeneral.org
216.80.76.49	A	bdl1.stk-cbr2.chi-stk.il.cable.rcn.net
216.80.76.49	A	216-80-76-49.il.subnet.cable.rcncustomer.com
216.80.76.126	A	216-80-76-126.il.subnet.cable.rcn.com
216.80.76.244	A	questpcs.com
216.80.76.244	A	taoofdesign.com
216.80.76.244	A	mail.questinternet.net
216.80.77.14	A	mail1.r3law.com
216.80.77.107	A	mail.schatzdevelopment.com
216.80.77.178	A	mail.catseye.net
216.80.77.178	A	tag.catseye.net
216.80.77.178	A	catseye.net
216.80.77.179	A	tag.catseye.net
216.80.77.243	A+PTR	216-80-77-243.il.subnet.cable.rcncustomer.com
216.80.82.51	A+PTR	westinm52.w.subnet.rcn.com
216.80.83.184	PTR	blakefone01.b.subnet.rcn.com
216.80.85.153	PTR	mail.cambridgedata.com
216.80.85.154	A	recruitment-caii.com
216.80.85.154	A	mail.resume-management.com
216.80.88.10	A	216-80-88-10.c3-0.fld-ubr1.chi-fld.il.cable.rcn.com
216.80.93.34	A	sfhqip2.switchfast.com
216.80.93.50	A+PTR	midlandman03.m.subnet.rcn.com
216.80.93.132	A	magnolia.littlegreencube.com
216.80.94.1	PTR	bdl1.snb-ubr2.chi-snb.il.cable.rcn.net
216.80.94.1	A+PTR	216-80-94-1.c3-0.snb-ubr2.chi-snb.il.cable.rcn.com
216.80.94.15	A	messageml.org
216.80.94.57	A	nightchild.net
216.80.94.195	PTR	216-80-94-195.c3-0.snb-ubr2.chi-snb.il.cable.rcn.com
216.80.94.195	A	omegapri.me
216.80.94.245	A	reidvpn.com
216.80.95.254	A	reidfrankenberg.com