Robtex

Up: 208.76.0.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 208.76.0.0/23
Down right: 208.76.2.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
208.76.0.2	A	idealabstack.com
208.76.1.2	PTR	b2.idealab.com
208.76.1.2	A	nat2.idealab.com
208.76.1.3	A	nat3.idealab.com
208.76.1.4	PTR	nat4ns.idealab.com
208.76.1.5	A	il-la.la.idealab.com
208.76.1.11	A+PTR	gw-inap.perfectmarket.com
208.76.1.25	A	snat-web-bbcc.idealab.com
208.76.1.26	A	snat-web-rsst.idealab.com
208.76.1.30	A+PTR	pmw16.perfectmarket.com
208.76.1.41	PTR	ns-dc.airwave.com
208.76.1.43	A	www.adticker.com
208.76.1.47	A+PTR	energycache.com
208.76.1.60	PTR	redirect.discoverflexa.com
208.76.1.60	A	discoverflexa.com
208.76.1.68	A+PTR	www.idealab.com
208.76.1.68	A	ejewel.com
208.76.1.68	A	*.ejewel.com
208.76.1.70	PTR	redirect.la.idealab.com
208.76.1.70	A	animepaintings.com
208.76.1.70	A	cowfreemonday.com
208.76.1.73	PTR	tweetup.com
208.76.1.77	A	forums.x1.stage.la.idealab.com
208.76.1.78	A+PTR	forums.x1.com
208.76.1.80	PTR	redirector.la.idealab.com
208.76.1.80	A	energycache.com
208.76.1.80	A	idealab.dk
208.76.1.85	PTR	watson.perfectmarket.com
208.76.1.92	PTR	www.worldhaus.com
208.76.1.96	A	arbitrage.la.idealab.com
208.76.1.101	A	blog.tools.com
208.76.1.101	A	wilson.tools.com
208.76.1.101	A	*.tools.com
208.76.1.107	PTR	www.getgiffie.com
208.76.1.107	A	getjesture.com
208.76.1.107	A	robotmail.la.idealab.com
208.76.1.109	A+PTR	update.x1.com
208.76.1.111	PTR	www.x1.com
208.76.1.111	A	support.x1.com
208.76.1.116	A	getslice.com
208.76.1.118	A	www.monetizationinc.com
208.76.1.118	A	edisun.com
208.76.1.118	A	monetizationinc.com
208.76.1.120	A	partner.x1discovery.com
208.76.1.121	A	billgross.com
208.76.1.122	PTR	www.bill-gross.com
208.76.1.122	A	bill-gross.com
208.76.1.123	PTR	ntp.idealab.com
208.76.1.123	A	0.bdrthermea.pool.ntp.org
208.76.1.126	A	client.x1.com
208.76.1.126	A	findclient.idealab.com
208.76.1.126	A	findclient.la.idealab.com
208.76.1.128	A	download.x1discovery.com
208.76.1.131	A	idea-lab.com
208.76.1.133	A+PTR	rss.x1.com
208.76.1.135	PTR	aff.snap.com
208.76.1.140	PTR	editorial.cluster2.perfectmarket.com
208.76.1.140	A	www.ideamarket.com
208.76.1.140	A	ideamarket.com
208.76.1.143	PTR	appstoretest.com
208.76.1.143	A	nettracker.la.idealab.com
208.76.1.143	A	nt.la.idealab.com
208.76.1.144	A+PTR	cowfreemondays.com
208.76.1.148	PTR	www.snap.com
208.76.1.153	PTR	www.mediariver.com
208.76.1.153	A	sb1.mediariver.com
208.76.1.153	A	*.mediariver.com
208.76.1.160	A	blastoff.com
208.76.1.161	A	ideashaper.com
208.76.1.169	A	scoutcraigslist.com
208.76.1.169	A	toolazytotweet.com
208.76.1.169	A	www.2lazy2tweet.com
208.76.1.170	PTR	spa.stage.snap.com
208.76.1.176	PTR	newidealab.stage.la.idealab.com
208.76.1.182	A+PTR	trymolo.com
208.76.1.183	A	www.mindmap.com
208.76.1.188	A	pro.x1.com
208.76.1.200	A	hostnew.perfectmarket.com
208.76.1.201	A	editorial.perfectmarket.com
208.76.1.205	PTR	search.perfectmarket.com
208.76.1.206	PTR	www.dwpower.com
208.76.1.214	A+PTR	www.solar-thermal.com
208.76.1.218	PTR	staging.perfectmarket.com
208.76.1.220	A+PTR	mx.idealab.com
208.76.1.221	A+PTR	myspam.idealab.com
208.76.1.230	A	mail.feedback.com
208.76.1.242	A	choke.la.idealab.com
208.76.1.249	A+PTR	ns3.idealab.com
208.76.1.250	A+PTR	ns1.idealab.com
208.76.1.250	A	ns1.perfectmarket.com
208.76.2.1	PTR	router.idealab-dmz.pas.idealab.com
208.76.2.2	A	tweacon.com
208.76.2.4	A+PTR	mail.idealab.com
208.76.2.4	A	mx2.idealab.com
208.76.2.4	A	mail.ebusiness.com
208.76.2.5	A+PTR	pop-smtp.idealab.com
208.76.2.14	A	march.idealab.com
208.76.2.20	PTR	proto.idealab.com
208.76.2.20	A	eversparkle.com
208.76.2.20	A	herei.am
208.76.2.33	PTR	router.idealab-mis-dmz.pas.idealab.com
208.76.2.39	A+PTR	outlook.idealab.com
208.76.2.43	A+PTR	pasdc1.iad.idealab.com
208.76.2.55	A	uberconf.idealab.com
208.76.2.131	A+PTR	valdez.pas.idealab.com
208.76.2.133	A	rt.idealab.com
208.76.2.137	A+PTR	inet.pas.idealab.com
208.76.2.137	A	inet.idealab.com
208.76.2.137	A	intranet.idealab.com
208.76.2.139	A+PTR	packagearchive.pas.idealab.com
208.76.2.140	A	twiki.pas.idealab.com
208.76.2.141	A	auth.idealab.com
208.76.2.142	A+PTR	private.stage.idealab.com
208.76.2.143	PTR	private.pas.idealab.com
208.76.2.143	A	private.idealab.com
208.76.2.144	A	wigwam-framework.org
208.76.2.144	A	www.wigwam-framework.org
208.76.2.145	PTR	it.idealab.com
208.76.2.150	A	rt.idealab.com
208.76.2.155	A	idealabstack.com
208.76.2.162	A	webcam1.pas.idealab.com
208.76.2.166	A+PTR	webcam5.pas.idealab.com
208.76.2.181	A	x1techserv1.x1.com
208.76.2.182	A	x1techserv2.x1.com
208.76.2.183	A	x1techserv3.x1.com
208.76.2.184	A+PTR	x1techserv4.x1.com
208.76.2.185	A	x1techserv5.x1.com
208.76.2.186	A	x1techserv6.x1.com
208.76.2.187	A	x1techserv7.x1.com
208.76.2.188	A+PTR	x1techserv8.x1.com
208.76.2.189	A	x1techserv9.x1.com
208.76.3.1	PTR	furnace.pas.idealab.com
208.76.3.3	A+PTR	char.idealab.com
208.76.3.3	A	mx3.idealab.com
208.76.3.6	A+PTR	wondertwin.x1.com
208.76.3.6	A	activate.x1.com
208.76.3.9	A+PTR	copley.pas.idealab.com
208.76.3.9	A	clickableworld.com
208.76.3.10	A	forumsearch.x1.com
208.76.3.29	PTR	available.idealab.com
208.76.3.29	A	theflash.x1.com
208.76.3.29	A	logs.x1.com
208.76.3.30	A+PTR	ims.pas.idealab.com
208.76.3.30	A	newgrad.com
208.76.3.41	PTR	furnace.pas.perfectmarket.com
208.76.3.42	PTR	gw.pas.perfectmarket.com
208.76.3.66	PTR	openstack.pas.idealab.com
208.76.3.85	A+PTR	os208-76-3-85.pas.idealab.com
208.76.3.85	A	wordswap.com
208.76.3.87	PTR	os208-76-3-87.pas.idealab.com
208.76.3.87	A	hriam.com
208.76.3.87	A	radar.me
208.76.3.88	PTR	os208-76-3-88.pas.idealab.com
208.76.3.88	A	yourfriendsrealtor.com
208.76.3.90	PTR	os208-76-3-90.pas.idealab.com
208.76.3.90	A	mytro.com
208.76.3.90	A	trending.at
208.76.3.91	PTR	os208-76-3-91.pas.idealab.com
208.76.3.91	A	clipbetter.com
208.76.3.92	A	toptentweets.com
208.76.3.93	PTR	hgen93.pas.idealab.com
208.76.3.93	A	getzipline.com
208.76.3.99	A+PTR	os208-76-3-99.pas.idealab.com
208.76.3.99	A	getiframeapp.com
208.76.3.100	A+PTR	os208-76-3-100.pas.idealab.com
208.76.3.101	PTR	os208-76-3-101.pas.idealab.com
208.76.3.101	A	buytiktok.com
208.76.3.134	A	x1build.x1dev.com
208.76.3.137	A	exchange2010.x1dev.com
208.76.3.145	A	x1blade0.x1.com
208.76.3.146	A+PTR	x1blade1.x1.com
208.76.3.147	A	x1blade2.x1.com
208.76.3.148	A+PTR	x1blade3.x1.com
208.76.3.149	A	x1blade4.x1.com
208.76.3.150	A+PTR	x1blade5.x1.com
208.76.3.151	A	x1blade6.x1.com
208.76.3.152	A+PTR	x1blade7.x1.com
208.76.3.153	A+PTR	x1blade8.x1.com
208.76.3.154	A+PTR	x1blade9.x1.com