Robtex

Up: 216.38.64.0/19
Can't show all results, try to descend to a more specific CIDR
Down left: 216.38.64.0/21
Down right: 216.38.72.0/21
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
216.38.64.1	A	mail.innovativenetworks.net
216.38.64.80	A	sourcinganalyst.com
216.38.64.82	PTR	bear.greathillpartners.com
216.38.64.88	A+PTR	tls.massmutualcareers.com
216.38.64.100	A+PTR	voip.tier1net.com
216.38.64.100	PTR	helpdesk.tier1net.net
216.38.64.169	A	cruzinuniverse.com
216.38.64.169	A	mail.cruzinuniverse.com
216.38.65.1	A	mail.rettigtech.com
216.38.65.1	A	mail.tier1internet.net
216.38.65.1	A	mail.chrispape.com
216.38.65.21	A+PTR	support.innovativenetworks.com
216.38.65.23	A	ftp.profitmanagementinc.com
216.38.65.24	A	notify.tier1net.com
216.38.65.25	A	steadycare.com
216.38.65.34	PTR	www.semperllc.com
216.38.65.34	A	semperintl.com
216.38.65.35	A	ftp.printworkers.com
216.38.65.39	A	www3.printworkers.com
216.38.65.164	A	eprintjobs.com
216.38.65.164	A	presstemps.com
216.38.65.164	A	adeptx.com
216.38.65.182	A	semperpt.com
216.38.65.186	A	email.semperllc.com
216.38.65.193	A	sw1.tier1net.com
216.38.65.194	PTR	www.danversbank.com
216.38.65.194	A	danverssavings.com
216.38.65.194	A	www.danverssavings.com
216.38.65.202	PTR	mail.littlesprouts.com
216.38.65.202	PTR	mail.leadershipandliteracy.org
216.38.66.4	A	hunterinfocus.com
216.38.66.10	A	mail.tier1net.net
216.38.66.10	A	relay.tier1net.net
216.38.66.11	A	mail.brookepea.com
216.38.66.21	A+PTR	nebh-relay.som.tier1net.net
216.38.66.21	A	nebh.org
216.38.66.21	A	www.nebh.org
216.38.66.30	A	mail.intellisoftgroup.com
216.38.66.37	A+PTR	isgweb-relay.intellisoftgroup.com
216.38.66.37	A	intellisoftgroup.com
216.38.66.40	A+PTR	mail.gutierrezco.com
216.38.66.50	A	connect.tier1net.com
216.38.66.52	A+PTR	img-relay.som.tier1net.net
216.38.66.52	A	myeventpic.com
216.38.66.59	A	chat.tier1net.net
216.38.66.65	A+PTR	beta.americanmusicco.com
216.38.66.65	A	www.americanmusicco.com
216.38.66.80	A	assets.atriushealth.org
216.38.66.81	A	atrius.dev.som.tier1net.net
216.38.66.81	A	www.atriushealth.org
216.38.66.81	A	atriushealth.org
216.38.66.83	A	www.atriushealth.org
216.38.66.83	A	atriushealth.org
216.38.66.101	PTR	limoliner.com
216.38.66.101	A	www.limoliner.com
216.38.66.101	A	kennisonassociates.com
216.38.66.102	A	msa.tier1net.net
216.38.66.103	A	www.hancockassociates.com
216.38.66.110	A	tier1net.com
216.38.66.112	A	www.tier1net.com
216.38.66.112	A	tier1cloudhosting.com
216.38.66.112	A	tier1cloud.net
216.38.66.121	PTR	db1.tier1net.net
216.38.66.121	A	as1.tier1net.net
216.38.66.141	A+PTR	clxweb-relay.contractlogix.com
216.38.66.141	A	contractlogix.com
216.38.66.142	A+PTR	clx-saas-relay.contractlogix.com
216.38.66.144	A	web.contractlogix.com
216.38.66.152	PTR	mma-relay.som.tier1net.net
216.38.66.152	A	media.massmutual.com
216.38.66.152	A	massmutual-sanjose.com
216.38.66.160	A	gidev06.com
216.38.66.160	A	*.sullivantirewholesale.com
216.38.66.160	A	www.sullivantirewholesale.com
216.38.66.162	A	massmutualbrokerage.com
216.38.66.180	A	mail.contractlogix.com
216.38.66.190	A	mail.zizikpowers.com
216.38.66.190	A	mail.zizikpowers.net
216.38.66.190	A	smtp.ziziklaw.com
216.38.66.210	A+PTR	caw-relay.som.tier1net.net
216.38.66.210	A	host227.cerulli.com
216.38.66.210	A	cerulli.com
216.38.66.220	PTR	ws1.tier1net.net
216.38.66.220	A	sourcinganalyst.com
216.38.66.220	A	steadycare.com
216.38.66.230	A	mail.xtalic.com
216.38.66.252	A	mmrelay.tier1net.net
216.38.66.253	A+PTR	som.fw.tier1net.net
216.38.66.253	A+PTR	fw.som.tier1net.net
216.38.66.253	A+PTR	hvp-fw.som.tier1net.net
216.38.67.1	A+PTR	as1.tier1net.net
216.38.67.17	A+PTR	stw-relay.tier1net.net
216.38.67.17	A	sullivantire.com
216.38.67.17	A	www.sullivantire.com
216.38.67.33	A	dbprod01.genuineinteractive.com
216.38.67.34	PTR	mmw.tier1net.net
216.38.67.34	PTR	mmw-relay.tier1net.net
216.38.67.34	A	massmutualbrokerage.com
216.38.67.65	PTR	www.americanmusicco.com
216.38.67.81	PTR	www.mybobs.com
216.38.67.83	PTR	mail.centurycap.com
216.38.67.84	A+PTR	store.hiasys.com
216.38.67.193	A+PTR	aw1.tier1net.net
216.38.67.193	A	giftofhearingfoundation.org
216.38.67.193	A	disbeducation.com
216.38.67.210	A	smtp.tier1net.net
216.38.68.30	A	dr.eliotchs.org
216.38.68.109	A	summer-dr.frontiercap.com
216.38.69.4	A+PTR	ns4.tier1net.net
216.38.69.4	A	ns2.tier1net.net
216.38.70.16	A	signaturevendingservices.com
216.38.70.17	A	mail.signaturevendingservices.com
216.38.70.129	A	mail.raymondproperties.com
216.38.70.177	A	traumasurvey.com
216.38.70.177	A	www.traumasurvey.com
216.38.71.2	PTR	mail.syndax.com
216.38.73.51	A	mail.jobsingraphics.com
216.38.73.55	A	email.jobsingraphics.com
216.38.73.70	PTR	mail2.digitalbungalow.com
216.38.73.80	A	mybobsoutlet.com
216.38.73.80	A	mionitta.com
216.38.74.36	PTR	host-74-36.tier1net.net
216.38.74.36	A	chrisandbrita.com
216.38.74.36	A	britaandchris.com
216.38.74.81	PTR	host-74-81-salemfive.com
216.38.74.98	A	benefitplanmgmt.com
216.38.74.122	PTR	mail2.healthplansinc.com
216.38.74.123	PTR	wm01.healthplansinc.com
216.38.74.177	A	mail.scleroderma.org
216.38.76.10	PTR	mail.s-s-i.com
216.38.76.66	PTR	mail.promedicacrc.com
216.38.76.82	PTR	mail.schoonover.com
216.38.76.83	PTR	email.nsps.com
216.38.76.108	A	dsl.svdesign.com
216.38.76.136	PTR	mail.otooleco.com
216.38.76.170	A	remote.pmcinsurance.com
216.38.76.205	PTR	mail.r-c-b.com
216.38.76.210	A+PTR	owa.centurycap.com
216.38.77.33	PTR	mail.r-c-b.com
216.38.77.169	PTR	mail.centurycap.com