Robtex

Up: 208.53.32.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 208.53.36.0/23
Down right: 208.53.38.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
208.53.36.35	PTR	208-53-36-35.c7dc.com
208.53.36.35	A	ns1.altarama.com
208.53.36.35	A	alt-dc7.altarama.com
208.53.36.44	PTR	208-53-36-44.c7dc.com
208.53.36.44	A	altarama.com
208.53.36.44	A	ns2.altarama.com
208.53.36.51	A+PTR	smtp.altarama.com
208.53.36.54	PTR	pub-208-53-36-54.center7.com
208.53.36.54	A	utah4.altarama.com
208.53.36.54	A	www.reference-service.info
208.53.36.55	PTR	pub-208-53-36-55.center7.com
208.53.36.58	A	mail.altarama.com
208.53.36.69	PTR	mail.hh2.com
208.53.36.69	A	mail.troop1611.com
208.53.36.69	A	mail.oakridgetrek.com
208.53.36.70	PTR	cluster.dbintegration.com
208.53.36.72	A	mail.hh2.com
208.53.36.72	A	nielsonfamily.com
208.53.36.76	A	circlehwy.com
208.53.36.81	PTR	web2.dbintegration.com
208.53.36.81	A	forums.hh2.com
208.53.36.83	PTR	antispam.hoganconstruction.com
208.53.36.83	A	antispam.dorrity.net
208.53.36.83	A	antispam.nielsonfamily.net
208.53.36.85	A	antispam.hoganelite.com
208.53.36.87	A	mail.constructionsa.com
208.53.36.89	A	www.houserecipe.com
208.53.36.89	A	*.houserecipe.com
208.53.36.89	A	antispam.houserecipe.com
208.53.36.100	PTR	208-53-36-100.c7dc.com
208.53.36.100	A	timberscanmobile.com
208.53.36.132	PTR	mail.cudp.com
208.53.36.158	PTR	208-53-36-158.c7dc.com
208.53.36.158	A	mail.cudp.com
208.53.36.164	PTR	208-53-36-164.c7dc.com
208.53.36.164	A	fantasyimmortals.com
208.53.36.166	A	mysticwebdesign.net
208.53.36.166	A	mysticwebdesign.org
208.53.36.166	A	www.mysticwebdesign.com
208.53.36.169	PTR	208-53-36-169.c7dc.com
208.53.36.169	A	oldmillclubhouse.com
208.53.36.169	A	wishingpixies.com
208.53.36.180	A	yadyaputah.com
208.53.36.180	A	yadyap.org
208.53.36.185	PTR	208-53-36-185.c7dc.com
208.53.36.185	A	connectfund.com
208.53.36.201	A	rails.lunawebs.com
208.53.36.203	PTR	fimall.org
208.53.36.204	A	sunset.lunawebs.com
208.53.36.204	A	www.testmyiphone.com
208.53.36.206	PTR	market.lunawebhosting.com
208.53.36.206	A	rudnick.com
208.53.36.206	A	gfnmoney.com
208.53.36.207	PTR	market.lunawebhosting.com
208.53.36.208	A	isolaisabella.com
208.53.36.209	PTR	lacrosserecruits.com
208.53.36.221	PTR	michigan.lunawebs.com
208.53.36.221	A	liberiatravel.net
208.53.36.221	A	burunditravel.net
208.53.36.222	PTR	mail.ideawired.com
208.53.37.21	PTR	208-53-37-21.c7dc.com
208.53.37.21	A	twbtools.com
208.53.37.21	A	twbtools.net
208.53.37.45	PTR	208-53-37-45.c7dc.com
208.53.37.45	A	mail.vbizmail.com
208.53.37.70	A	clinchergloves.com
208.53.37.70	A	smtp.strikingimagesalon.com
208.53.37.70	A	bumblelady.com
208.53.37.76	A	sportmgr.com
208.53.37.81	PTR	208-53-37-81.c7dc.com
208.53.37.98	A	bloodhoundbargains.com
208.53.37.162	A	mail.answerbiz.com
208.53.37.201	PTR	208-53-37-201.c7dc.com
208.53.37.201	A	casinos2canyonsjaunts.com
208.53.37.201	A	*.oasisresort.com
208.53.37.210	A	email.planetsoftware.com
208.53.37.218	PTR	208-53-37-218.c7dc.com
208.53.37.222	PTR	208-053-037-222.surfutopia.net
208.53.37.226	PTR	208-53-37-226.c7dc.com
208.53.37.233	A	oasis-golf.com
208.53.37.233	A	mail.oasis-golf.com
208.53.37.242	PTR	208-53-37-242.c7dc.com
208.53.37.244	PTR	208-53-37-244.c7dc.com
208.53.38.70	A	viviendausa.net
208.53.38.107	PTR	mx.knowledgenlue.com
208.53.38.107	A	mx.tierfour.knowledgeblue.com
208.53.38.110	PTR	208-53-38-110.c7dc.com
208.53.38.115	PTR	208-53-38-115.c7dc.com
208.53.38.146	PTR	208-53-38-146.c7dc.com
208.53.38.146	A	phhutah.com
208.53.38.146	A	bandcrashers.com
208.53.38.148	PTR	208-53-38-148.c7dc.com
208.53.38.161	A	touchedbycards.com
208.53.38.171	A	mail.startuputah.com
208.53.38.172	PTR	apache.production.knowledgeblue.com
208.53.38.172	A	startupslc.com
208.53.38.172	A	startuputah.com
208.53.38.179	PTR	208-53-38-179.c7dc.com
208.53.38.179	A	xoompark.com
208.53.38.181	PTR	208-53-38-181.c7dc.com
208.53.38.181	A	www.meetinguniverse.com
208.53.38.181	A	meetinguniverse.com
208.53.38.225	A	mail.vblue.co
208.53.38.228	A	edtechaccelerator.com
208.53.38.228	A	techedaccelerator.com
208.53.38.228	A	mail.kaylakunz.com
208.53.38.246	PTR	ardua.com
208.53.38.246	A	hugheswestern.com
208.53.38.250	A	sattracks.cvssystems.com
208.53.39.22	A	rjmmpllc.com
208.53.39.22	A	mail.rjmmpllc.com
208.53.39.24	A	myadetitles.com
208.53.39.34	PTR	208-53-39-34.c7dc.com
208.53.39.50	PTR	hedda50.businessideasteamcorp.info
208.53.39.50	A	myvoip.me
208.53.39.50	A	core1-us-ut.evolocity.net
208.53.39.54	A	monitor.evolocity.net
208.53.39.55	A	ndp-us-ut.evolocity.net
208.53.39.58	A	evolocity.net
208.53.39.251	PTR	208-53-39-251.c7dc.com