Robtex

Up: 216.166.8.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 216.166.12.0/23
Down right: 216.166.14.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
216.166.12.0	A	extraordinarybenefits.com
216.166.12.0	A	mail.outsol.com
216.166.12.0	A	outsol.com
216.166.12.7	PTR	nat.collaborationhost.net
216.166.12.20	A+PTR	ns0.collaborationhost.net
216.166.12.20	A	ns0.cp.atrionsmb.net
216.166.12.20	A	ns0.cp.link2thecloud.com
216.166.12.21	PTR	ns1.collaborationhost.net
216.166.12.30	A+PTR	delivery.collaborationhost.net
216.166.12.31	A+PTR	out001.collaborationhost.net
216.166.12.32	A+PTR	out001.collaborationhost.net
216.166.12.33	A	outlook.collaborationhost.net
216.166.12.34	A+PTR	pop.collaborationhost.net
216.166.12.34	A	mail.noblesinvestments.com
216.166.12.35	PTR	imap.collaborationhost.net
216.166.12.36	A	mail.nuvhost.com
216.166.12.37	A+PTR	autodiscover.collaborationhost.net
216.166.12.38	PTR	autodiscoverredirect.collaborationhost.net
216.166.12.38	A	autodiscover.apptix.net
216.166.12.38	A	autodiscover.trinitytechnology.com
216.166.12.39	PTR	mobile.collaborationhost.net
216.166.12.40	A+PTR	oab.collaborationhost.net
216.166.12.42	A+PTR	ausp01vmbx01.collaborationhost.net
216.166.12.42	A	mail.thepdrgroup.com
216.166.12.43	A	ausp01vmbx02.collaborationhost.net
216.166.12.44	A+PTR	smtp.collaborationhost.net
216.166.12.44	A	mail.luxurysuitesintl.com
216.166.12.46	A	in002.collaborationhost.net
216.166.12.50	A	ns3.collaborationhost.net
216.166.12.50	A	ausp01mhub50.collaborationhost.net
216.166.12.50	A	ausp01mcas55.collaborationhost.net
216.166.12.52	A	ndopenmri.com
216.166.12.56	A+PTR	ausp01vmbx03.collaborationhost.net
216.166.12.59	A	ondemand.apptix.net
216.166.12.63	A	in001.collaborationhost.net
216.166.12.69	A+PTR	out001.collaborationhost.net
216.166.12.71	A	*.ngolearning.org
216.166.12.72	PTR	out001.collaborationhost.net
216.166.12.73	PTR	out002.mi8.com
216.166.12.78	A	mail.mcavoyss.com
216.166.12.78	A	mail.artassets.com
216.166.12.78	A	mail.rhfund.com
216.166.12.82	A	ftp.collaborationhost.net
216.166.12.84	A	portal-fpp.com
216.166.12.91	A	email.bramasol.com
216.166.12.91	A	mail.bellserv.com
216.166.12.91	A	mail.rhoderiverboats.com
216.166.12.108	PTR	cp.hostaccount.com
216.166.12.116	A	cp.collaborationhost.net
216.166.12.120	A	bm.collaborationhost.net
216.166.12.123	A	awstats.collaborationhost.net
216.166.12.130	A	dynamicresultsllc.net
216.166.12.130	A	www.hostaccount.com
216.166.12.132	A	apptixim.com
216.166.12.132	A	cltf.com.inboundmx.net
216.166.12.132	A	mi8nycmail13.mi8.com
216.166.12.140	A	arborlivingcenters.com
216.166.12.140	A	thehighlandgroupemail.com
216.166.12.140	A	townsqurefinancial.net
216.166.12.146	A	ausp01vmbx05.collaborationhost.net
216.166.12.147	A+PTR	ausp01vmbx06.collaborationhost.net
216.166.12.150	A	pop.hostaccount.com
216.166.12.152	PTR	mail.hostaccount.com
216.166.12.152	A	mail.sasdesign.com
216.166.12.152	A	mail.robertandfrannie.com
216.166.12.164	PTR	collaborationhost.net
216.166.12.164	A	lvh3.net
216.166.12.164	A	aestheticoncierge.com
216.166.12.171	A	mi8.com
216.166.12.175	A	summitscholar.net
216.166.12.175	A	rrsnyder.com
216.166.12.175	A	mspelletz.com
216.166.12.176	A	lvh3.net
216.166.12.176	A	pologolfer.com
216.166.12.176	A	monkeyadmin.net
216.166.12.182	A	oct.collaborationhost.net
216.166.12.196	A	csaglobalsite.com
216.166.12.196	A	blueoakcompanies.com
216.166.12.196	A	traercreek.com
216.166.12.197	A	click2callnet.com
216.166.12.225	A	securedelivery.apptixhealth.net
216.166.12.225	A	securedelivery.ascensionhealth.org
216.166.12.241	A	redirect.ascensionhealth.org
216.166.12.243	A+PTR	mail.apptixhealth.net
216.166.12.243	A	legacy.mail.ascensionhealth.org
216.166.12.244	A+PTR	smtp.apptixhealth.net
216.166.12.245	PTR	autodiscover.apptixhealth.net
216.166.12.245	A	autodiscover.dcsno.org
216.166.12.245	A	autodiscover.doc.org
216.166.12.246	PTR	delivery.apptixhealth.net
216.166.12.248	A	autodiscover.ascensionhealth.org
216.166.12.249	A	smtp.ascensionhealth.org
216.166.13.15	A	intowa.com
216.166.13.39	A	exchange.megapath.com
216.166.13.43	A	cp.link2thecloud.com
216.166.13.185	A	connercloud.com
216.166.14.10	A	rfarano.itsac.com
216.166.14.10	A	mail2.itsac.com
216.166.14.10	A	www.itsac.com
216.166.14.31	A	*.net.londonandmead.com
216.166.14.31	A	jointcouncil.org
216.166.14.31	A	compasscomputer.net.londonandmead.com
216.166.14.49	A	sharepointnymtc.org
216.166.15.33	A	massla.org
216.166.15.56	A	esisharepoint.com
216.166.15.60	A	apollodirectors.com
216.166.15.131	A	barton-law.org
216.166.15.132	A	dupont-mpcss.com
216.166.15.142	A	serenityhouses.com
216.166.15.147	A	soaportal.org
216.166.15.167	A	byramsharepoint.com
216.166.15.171	A	gracefarmsfoundation.org
216.166.15.171	A	head.c1audio.com
216.166.15.171	A	jokadainc.com
216.166.15.176	A	lifeservicescorp.net
216.166.15.176	A	oldnorthwestservices.com
216.166.15.176	A	fspcbk.com
216.166.15.213	A	cbcrinc.com
216.166.15.213	A	albemarleeyecare.com
216.166.15.213	A	glazefam.com
216.166.15.220	A	sueforlg.com
216.166.15.220	A	eltondesigns.com
216.166.15.220	A	ecuboardshare.com
216.166.15.227	A	ucp1.org
216.166.15.228	A	partenshare.com
216.166.15.230	A	www.charlesriverteams.com
216.166.15.247	A	regentcoaching.com