Robtex

Up: 72.251.224.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 72.251.228.0/23
Down right: 72.251.230.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
72.251.228.3	A+PTR	mantis007-nyj.tokbox.com
72.251.228.4	A+PTR	mantis008-nyj.tokbox.com
72.251.228.5	A	beta001-nyj.tokbox.com
72.251.228.6	A+PTR	turn002-nyj.tokbox.com
72.251.228.10	A+PTR	proxy001-nyj.tokbox.com
72.251.228.10	A	api.opentok.com
72.251.228.10	A	anvil.opentok.com
72.251.228.13	A	mantis009-nyj.tokbox.com
72.251.228.14	A+PTR	em002-nyj.tokbox.com
72.251.228.15	A+PTR	em001-nyj.tokbox.com
72.251.228.16	A+PTR	turn004-nyj.tokbox.com
72.251.228.17	A+PTR	turn003-nyj.tokbox.com
72.251.228.19	PTR	proxy002-nyj.tokbox.com
72.251.228.19	A	api.opentok.com
72.251.228.19	A	anvil.opentok.com
72.251.228.23	A	me.tokbox.com
72.251.228.23	A	opentok.com
72.251.228.23	A	tokbox.com
72.251.228.24	A+PTR	turn001-nyj.tokbox.com
72.251.228.25	A+PTR	mantis003-nyj.tokbox.com
72.251.228.26	A+PTR	mantis004-nyj.tokbox.com
72.251.228.27	A	me.tokbox.com
72.251.228.27	A	opentok.com
72.251.228.28	A+PTR	et001-nyj.tokbox.com
72.251.228.29	A+PTR	et002-nyj.tokbox.com
72.251.228.30	A+PTR	betaturn001-nyj.tokbox.com
72.251.228.31	A+PTR	mantis005-nyj.tokbox.com
72.251.228.32	A+PTR	mantis006-nyj.tokbox.com
72.251.228.33	A	mantis002-nyj.tokbox.com
72.251.228.34	A	em003-nyj.tokbox.com
72.251.228.35	PTR	et003-nyj.tokbox.com
72.251.228.36	A+PTR	mantis010-nyj.tokbox.com
72.251.228.38	A+PTR	turn010-nyj.tokbox.com
72.251.228.39	A+PTR	turn011-nyj.tokbox.com
72.251.228.40	A+PTR	mantis011-nyj.tokbox.com
72.251.228.41	A+PTR	turn005-nyj.tokbox.com
72.251.228.42	A+PTR	turn006-nyj.tokbox.com
72.251.228.43	A+PTR	turn007-nyj.tokbox.com
72.251.228.44	A+PTR	turn008-nyj.tokbox.com
72.251.228.45	A+PTR	turn009-nyj.tokbox.com
72.251.228.142	A	framewelder.com
72.251.228.142	A	pattanat.com
72.251.228.142	A	rtiiconference.com
72.251.228.167	A	kaptanefamilysite.com
72.251.228.167	A	hmaarabia.com
72.251.228.167	A	efgeen.com
72.251.228.218	PTR	secucus-njy004.binarysource.net
72.251.228.220	A	smtp1.safehotsex.com
72.251.228.234	A	www.perezhilton.com
72.251.228.234	A	mobi.perezhilton.com
72.251.228.234	A	perezhilton.com
72.251.228.236	A	mobi.perezhilton.com
72.251.228.236	A	perezhilton.com
72.251.228.236	A	cocoperez.com
72.251.228.237	A	mobi.perezhilton.com
72.251.228.237	A	perezhilton.com
72.251.229.51	A	st.houzz.com
72.251.229.55	A	st.houzz.com
72.251.229.68	A	mailer.affordablevacationspots.com
72.251.229.69	PTR	smp1-1.mailer.affordablevacationspots.com
72.251.229.69	A	c7-use-3.algolianet.com
72.251.229.72	PTR	smp2-2.mailer.phoenixphenoms.com
72.251.229.72	A	d212-use-3.algolianet.com
72.251.229.72	A	d212-use-3.algolia.net
72.251.229.73	A	d211-use-3.algolia.net
72.251.229.74	A	d232-use-3.algolia.net
72.251.229.76	A	c5-use-1.algolianet.com
72.251.229.196	A	proplugins.org
72.251.229.196	A	www.proplugins.org
72.251.229.229	A	nsmaster1.owneriq.net
72.251.229.229	A	nsmaster1.prod.infra.nyj.inap.owneriq.net
72.251.229.229	A	ns1.owneriq.net
72.251.229.243	A	corpsite.owneriq.com
72.251.231.55	A	exchange.optimal-mediapricingengine.com.akadns.net
72.251.231.55	A	revizerny.mediapricingengine.com
72.251.231.55	A	devcosrv.com
72.251.231.56	A	exchange.optimal-mediapricingengine.com.akadns.net
72.251.231.56	A	revizerny.mediapricingengine.com
72.251.231.56	A	devcosrv.com
72.251.231.60	A	xpdsny.semanticbidder.com
72.251.231.60	A	nynginxlb.semanticbidder.com
72.251.231.61	A	xpdsny.semanticbidder.com
72.251.231.61	A	nynginxlb.semanticbidder.com
72.251.231.62	A	xpdsny.semanticbidder.com
72.251.231.62	A	nynginxlb.semanticbidder.com
72.251.231.80	A	spf.abb.com
72.251.231.81	A	spf.abb.com
72.251.231.85	A	foreyeslocal.com
72.251.231.86	A	spf.abb.com
72.251.231.87	A	projectmanagementformula.com
72.251.231.88	A	bkinvestmentspending.com
72.251.231.89	A	elementool.com
72.251.231.89	A	www.elementool.com
72.251.231.90	A	bkbriefcase.com
72.251.231.92	A	mesron.com
72.251.231.93	A	corporatesalesformula.com
72.251.231.133	A+PTR	mail.telymancr.com
72.251.231.134	A	telymancr.com
72.251.231.141	A	tecnologiasjcas.com
72.251.231.200	A	hawaiinweddinginsurance.com
72.251.231.200	A	sportsinsurancehawaii.com
72.251.231.202	A	sportunderwriter.com
72.251.231.202	A	sportunderwriters.com