Robtex

Up: 64.8.64.0/19
Can't show all results, try to descend to a more specific CIDR
Down left: 64.8.64.0/21
Down right: 64.8.72.0/21
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
64.8.64.4	A	relay1.cxtec.com
64.8.64.5	A	helpdumpthehump.org
64.8.64.5	A	recoverexpress.com
64.8.64.5	A	cxtech.net
64.8.64.60	A	relay5.cxtec.com
64.8.64.60	A	relay5.teracai.com
64.8.64.60	A	relay5.wgpfoundation.org
64.8.64.88	A+PTR	outweb07.cxtec.com
64.8.64.99	A+PTR	cx1.cxtec.com
64.8.64.100	A+PTR	cx0.cablexpress.com
64.8.64.144	A	relay.teracai.com
64.8.64.173	A	lyncedge.cxtec.com
64.8.64.189	A	atlantixsystems.com
64.8.64.189	A	atlantixsystems.org
64.8.64.189	A	www.teracai.com
64.8.64.209	PTR	services.cxtec.com
64.8.64.239	A	tec.cxtec.com
64.8.64.239	A	ns1.tec.cxtec.com
64.8.64.240	PTR	vpn.tec.cxtec.com
64.8.65.4	A	isa2.ccs.edu
64.8.65.191	A	fusion360media.com
64.8.68.6	PTR	mail.xpresscredit.net
64.8.68.39	PTR	awc.hancocklaw.com
64.8.68.135	PTR	smtp.hoacny.com
64.8.69.103	A	standingstonerecords.com
64.8.69.105	A	uticatrifire.com
64.8.69.105	A	dunkirkexcelsior.com
64.8.69.109	A	ecrhvac.com
64.8.69.113	PTR	spamfw.jetnet.com
64.8.69.115	PTR	mysweb1.mysticstamp.com
64.8.69.116	PTR	mail.phoen1xasp.com
64.8.69.117	A	mail.naturtyme.com
64.8.69.117	A	mail.needs.com
64.8.69.120	A	premieraviationcrm.com
64.8.69.121	A	futureofhomeenergy.com
64.8.69.134	PTR	mail.ucp-utica.org
64.8.69.137	PTR	sf.upstatecp.org
64.8.69.167	PTR	mail.ccharityom.org
64.8.69.168	PTR	mail.upstatecp.org
64.8.69.172	A	thirstyowlwinecompany.com
64.8.70.10	PTR	web.garnish.synacor.com
64.8.70.11	PTR	solutions.synacor.net
64.8.70.11	A	cookieshield.net
64.8.70.12	PTR	static.garnish.synacor.com
64.8.70.16	A+PTR	authentication.charter.net.ent.syn-alias.com
64.8.70.16	A	authentication.charter.net
64.8.70.17	A+PTR	authorize.suddenlink.net.ent.syn-alias.com
64.8.70.17	A	authorize.suddenlink.net
64.8.70.19	PTR	www.websso.mybrctv.com.ent.syn-alias.com
64.8.70.32	A+PTR	identity1.dishnetwork.com.ent.syn-alias.com
64.8.70.33	A+PTR	auth.mybendbroadband.com.ent.syn-alias.com
64.8.70.33	A	auth.mybendbroadband.com
64.8.70.34	A	websso-promo.synacor.net
64.8.70.35	PTR	auth.centurylink.net.ent.syn-alias.com
64.8.70.48	A+PTR	mail.cableone.syn-alias.com
64.8.70.48	A	email.mycableone.com
64.8.70.49	PTR	md09.wow.synacor.com
64.8.70.51	A+PTR	pop.wow.synacor.com
64.8.70.54	A	mx.wow.synacor.com
64.8.70.66	A+PTR	ns1.synacor.com
64.8.70.66	A	ns3.synacor.com
64.8.70.66	A	ns1.embarq.synacor.com
64.8.70.67	PTR	ns2.synacor.com
64.8.70.81	A+PTR	static.garnet.synacor.com
64.8.70.81	A	logo.synacor.com
64.8.70.81	A	images.synacor.com
64.8.70.84	A+PTR	smtp-fo.tds.cmh.synacor.com
64.8.70.101	A+PTR	web.synacor.com
64.8.70.101	A	mail.chek.com
64.8.70.101	A	mail.mybudweiser.com
64.8.70.102	PTR	webportal.synacor.com
64.8.70.103	PTR	mail.tds.syn-alias.com
64.8.70.115	PTR	portal.synacor.com
64.8.70.115	A	start-portal.synacor.com
64.8.70.116	A	commcenter.mchsi.com
64.8.70.120	A	web.mysurewest.net
64.8.70.120	A	www.mysurewest.net
64.8.70.128	A	smtp.synacor.com
64.8.70.130	A	imap.synacor.com
64.8.70.131	A	dish-proxy.auth-gateway.net
64.8.70.132	A+PTR	toshiba.synacor.com
64.8.70.145	PTR	static.uat20.diamond.synacor.com
64.8.70.150	PTR	vidftp.synacor.com
64.8.70.160	A	sp.synacor.net
64.8.70.171	PTR	web.uat05.garnet.synacor.com
64.8.70.181	PTR	pubftp.synacor.com
64.8.70.187	A	bridge-auth-gateway-net.cmh.syn-api.com
64.8.70.191	A	ripdepot.synacor.com
64.8.70.192	PTR	secure.metrocast.garnet.synacor.com
64.8.70.192	A	secure.metrocast.net
64.8.70.196	A	mediacomtoday.com
64.8.70.196	A	*.mediacomtoday.com
64.8.70.196	A	www.mediacomtoday.com
64.8.70.201	PTR	web-build.synacor.com
64.8.70.209	A+PTR	resintest.synacor.com
64.8.70.210	A	portaltest.synacor.com
64.8.70.215	A	fw1-ch.synacor.com
64.8.70.216	A+PTR	fw2-ch.synacor.com
64.8.70.227	A	uat03-web.synacor.com
64.8.70.228	A+PTR	uat03-portal.synacor.com
64.8.70.235	A	admin.synacor.com
64.8.70.242	PTR	mail.synacor.net
64.8.70.244	A	secure.windstream.net
64.8.70.245	A	secure.windstreambusiness.net
64.8.70.247	A	secure-my.astound.net.portal.syn-alias.com
64.8.71.5	PTR	uat.my.synacor.com
64.8.71.5	PTR	uat.synapps.synacor.com
64.8.71.10	A	tarpit.synacor.com
64.8.71.14	A	mail.citecorp.net
64.8.71.14	A	mail.bloomington.in.us
64.8.71.14	A	mail.keynet.net
64.8.71.16	PTR	pop.fuse.net
64.8.71.16	A	imap.fuse.net
64.8.71.16	A	pop3.fuse.net
64.8.71.19	PTR	smtpout-fo.fuse.net
64.8.71.22	PTR	mailrelay.armstrong.synacor.com
64.8.71.23	PTR	mx.armstrong.synacor.com
64.8.71.43	A	login.wildblue.net
64.8.71.43	A	login.wildblue.net.portal.syn-alias.com
64.8.71.58	A	login.directv.net.portal.syn-alias.com
64.8.71.70	A	authorize.myhughesnet.com.ent.syn-alias.com
64.8.71.70	A	authorize.myhughesnet.com
64.8.71.72	A	identity.sling.com
64.8.71.72	A	identity.sling.com.ent.syn-alias.com
64.8.71.100	A	webmail.mlb.com
64.8.71.106	A	imap.zoominternet.net
64.8.71.106	A	mail.zoominternet.syn-alias.com
64.8.71.111	PTR	mx.wowway.com
64.8.71.111	A	mx.knology.net
64.8.71.112	A+PTR	smtp.knology.net
64.8.71.112	A	mail.wowwaynet.syn-alias.com
64.8.71.112	A	mail.knology.syn-alias.com
64.8.71.113	PTR	smtp.iw.net
64.8.71.114	PTR	smtp.rushmore.com
64.8.71.115	PTR	smtp.sunflower.com
64.8.71.143	PTR	static.uat21.diamond.synacor.com
64.8.71.147	A+PTR	web.uat04.garnet.synacor.com
64.8.71.230	A+PTR	secure-my.wavebroadband.com.portal.syn-alias.com
64.8.71.230	A	secure-my.wavebroadband.com
64.8.71.236	A	demo.synacor.com
64.8.71.237	A	static.sapphire.synacor.com
64.8.73.21	PTR	www.dietrichsmilk.com
64.8.73.21	A	coldfrontdist.net
64.8.73.21	A	coldfrontdist.com
64.8.73.25	PTR	dev.dairylea.com
64.8.73.26	PTR	www.dairylea.com
64.8.73.33	PTR	eaglesupplyco.com
64.8.73.33	PTR	www.eaglesupplyco.com
64.8.73.33	PTR	www.empirecompanies.com
64.8.73.40	A	empirelivestock.com
64.8.73.40	A	www.empirelivestock.com
64.8.73.46	A	www.empireagrisystems.com
64.8.73.50	PTR	eagledairydirect.com
64.8.73.50	PTR	dl-mail.equinalysis.biz
64.8.73.50	PTR	dl-mail.agri-edge.com
64.8.73.92	A	www.dairylea.com
64.8.73.92	A	dfamilkne.com
64.8.73.92	A	dairylea.com
64.8.73.98	A	dl-gateway.eaglesupplyco.com
64.8.73.98	A	dl-gateway.eaglefleetdirect.com
64.8.73.98	A	dl-gateway.empireagrisystems.com
64.8.73.99	A	email.empireagrisystems.com
64.8.73.102	PTR	dietur.dairydataprocessing.com
64.8.73.117	A	aurevoir.dairylea.com
64.8.73.117	A	aurevoir.dairydataprocessing.net
64.8.73.149	PTR	dlnacv.dairydataprocessing.com
64.8.73.150	PTR	dev.equi-analytical.com
64.8.73.234	A	dl-gateway.dairylea.com
64.8.73.234	A	dl-gateway.dairydataprocessing.net
64.8.73.235	A	dl-gateway.dairylea.com
64.8.73.235	A	dl-gateway.dairydataprocessing.net
64.8.73.236	A	dl-gateway.dairylea.com
64.8.73.236	A	dl-gateway.dairydataprocessing.net
64.8.73.237	A	dl-gateway.dairylea.com
64.8.73.237	A	dl-gateway.dairydataprocessing.net
64.8.73.238	A	dl-gateway.dairylea.com
64.8.73.238	A	dl-gateway.dairydataprocessing.net
64.8.73.239	A	dl-gateway.dairylea.com
64.8.73.239	A	dl-gateway.dairydataprocessing.net
64.8.73.243	A	brittonfield.com
64.8.73.249	PTR	www.e-mail.dairylea.com
64.8.73.254	A	dl-gfi.agservagency.com
64.8.73.254	A	dl-gfi.empireagrisystems.com
64.8.73.254	A	dl-gfi.eaglefleetdirect.com
64.8.75.6	PTR	smtp01.tmghealth.com
64.8.75.7	A	ns-1.tmghealth.com
64.8.75.17	PTR	smtp01.tmghealth.com
64.8.75.28	A	zixvpm01.tmghealth.com
64.8.75.29	A	zixvpm02.tmghealth.com
64.8.75.34	PTR	selcva.org
64.8.76.10	A	ns1.kcnet.org
64.8.76.11	A	ns2.kcnet.org
64.8.76.12	A	elk.kcnet.org
64.8.76.18	PTR	cub.kcnet.org
64.8.76.19	A+PTR	mx1.kcnet.org
64.8.76.19	A	fbsd.kcnet.org
64.8.76.20	A	fbsd2.kcnet.org
64.8.76.21	A	selfbuilder.kcnet.org
64.8.76.36	PTR	river.pvmed.com
64.8.76.82	PTR	kronos1.kcnet.org
64.8.76.83	A	web.kcnet.org
64.8.76.102	PTR	mail.crwlaw.net
64.8.76.193	PTR	net-add.kcnet.org
64.8.78.16	PTR	kcnettnt01-78-016.kcnet.org
64.8.78.17	PTR	kcnettnt01-78-017.kcnet.org
64.8.79.33	PTR	kcnettnt01-79-033.kcnet.org