Robtex

Up: 64.34.64.0/19
Can't show all results, try to descend to a more specific CIDR
Down left: 64.34.80.0/21
Down right: 64.34.88.0/21
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
64.34.80.130	PTR	openmailservice.com
64.34.80.130	A	www.martenhouse.com
64.34.80.130	A	hotelecard.com
64.34.80.133	PTR	mail.openhospitality.com
64.34.80.163	A	*.crunzh.fogbugz.com
64.34.80.163	A	*.laughingd.fogbugz.com
64.34.80.163	A	sampiplan.fogbugz.com
64.34.80.165	PTR	nlbny1.fogcreek.com
64.34.80.169	PTR	mxny2.fogcreek.com
64.34.80.179	A	newpower.fogcreek.com
64.34.80.179	A	frznmtn.kilnhg.com
64.34.80.179	A	developers.kilnhg.com
64.34.82.4	A+PTR	ns4.aweb.com
64.34.82.6	A	vpn6.aweb.com
64.34.82.17	A	www.pandabamboo.com
64.34.82.17	A	mail.nsnurseryschool.com
64.34.82.17	A	mail.pandabamboo.com
64.34.82.18	PTR	controltechnology.us
64.34.82.18	PTR	mail.controltech.com
64.34.82.18	PTR	mta.controltechnology.us
64.34.82.200	A	livelook.us
64.34.82.200	A	www.livelook.us
64.34.83.139	A	aaaa3333.com
64.34.84.201	A	proxy.startpage.com
64.34.84.225	A	proxy.startpage.com
64.34.85.66	A	ns6.verdevalley.com
64.34.85.99	A	ns1.gproductions.net
64.34.85.100	A	ns2.gproductions.net
64.34.85.194	A	wncs.com
64.34.85.218	A	buyucsc.com
64.34.85.218	A	www.buyucsc.com
64.34.85.218	A	kiddeath.com
64.34.85.234	A	ns7.yoohost.com
64.34.85.234	A	ns5.yoohost.com
64.34.85.235	A	ns8.yoohost.com
64.34.87.2	PTR	usmail.ssgl.com
64.34.87.2	A	mail.carddesignstudio.com
64.34.87.7	A	email.capitaloneimagecard.com
64.34.87.11	A	uploadmysnapshot.com
64.34.87.19	A	mycarddesign.com
64.34.87.164	A+PTR	goodarticle.org
64.34.87.164	A	aatt.co
64.34.87.165	PTR	cultivation.org
64.34.87.165	A	mail.integritym.net
64.34.87.165	A	integritym.net
64.34.87.166	PTR	mailw.minghui.org
64.34.87.184	A+PTR	findingeducation.com
64.34.87.184	A	www.findingeducation.com
64.34.87.185	A	sweetsearch2day.com
64.34.87.185	A	dulcinea-ex1.dulcineamedia.com
64.34.88.21	A	ns1.fastln.net
64.34.88.151	A	admodus.com
64.34.89.3	A+PTR	gradmatch.org
64.34.89.3	A	www.gradmatch.org
64.34.89.4	A+PTR	yadlsimcha.com
64.34.89.5	A	sawyouatkspace.com
64.34.89.50	A+PTR	mx3.myemailfilter.com
64.34.89.132	A+PTR	gate.pub360.com
64.34.89.133	PTR	mail.comfi.com
64.34.89.133	A	mail.cyblife.com
64.34.89.133	A	mail.russiansanfran.com
64.34.89.134	PTR	ns1.comfibook.com
64.34.89.152	PTR	remailer.blog.ru
64.34.89.155	A	zeta.comby.ru
64.34.89.155	A	www.new-york.ru
64.34.89.155	A	*.romanticagency.com
64.34.89.160	A	radaris.info
64.34.89.160	A	radaris.us
64.34.89.160	A	radaris.biz
64.34.89.162	PTR	delta.comby.ru
64.34.89.166	PTR	mail.radaris.com
64.34.89.178	PTR	ns1.radaris.com
64.34.89.190	PTR	mail.radaris.com
64.34.89.244	A	ucanquit.org
64.34.89.251	PTR	mail.red5-llc.com
64.34.89.253	A+PTR	red5-llc.com
64.34.89.253	A	researchtechnology.net
64.34.89.253	A	businesstech.net
64.34.90.128	A	westpointrock.com
64.34.90.129	A	joomlamania.com
64.34.90.131	A	chinajetexpo.com
64.34.90.132	A	ambilosangeles.com
64.34.90.162	PTR	jll.360vp.com
64.34.90.164	A	x-ii.com
64.34.90.188	A	360vp.com
64.34.92.12	PTR	otservlist.org
64.34.92.65	PTR	server01.xpay.com
64.34.92.67	PTR	server01.xpay.com
64.34.92.94	PTR	z3us.net
64.34.93.4	A+PTR	v4.chinoc.net
64.34.93.5	A	v5.chinoc.net
64.34.93.6	A	v6.chinoc.net
64.34.93.18	PTR	v18.chinoc.net
64.34.93.19	PTR	v19.chinoc.net
64.34.93.33	PTR	v3.chinoc.net
64.34.93.51	PTR	v32.chinoc.net
64.34.93.135	A+PTR	pbx1.thinkbright.net
64.34.93.136	A	pbx2.thinkbright.net
64.34.93.148	A+PTR	ns1.radaris.com
64.34.93.149	A+PTR	mail.radaris.com
64.34.93.150	PTR	radaris.com
64.34.93.150	A	radaris.org
64.34.93.150	A	radaris.net
64.34.95.13	PTR	mail13.pulver.com
64.34.95.13	A	brandsconf.com
64.34.95.13	A	solecamp.com
64.34.95.19	A	gate.bagelandcreamcheese.com
64.34.95.67	A	dev.resellerchoice.com
64.34.95.83	A	mail.promobilegear.com
64.34.95.102	A	soundhomeperformance.com
64.34.95.102	A	energizephinney.com
64.34.95.105	A	www.findingdulcinea.com
64.34.95.105	A	*.findingdulcinea.com
64.34.95.114	A	nyjung.org
64.34.95.114	A	nyjungtherapy.org
64.34.95.179	PTR	pf2.creativemerch.com
64.34.95.183	A	frontierbf-pp.com
64.34.95.183	A	partneringgroup.com
64.34.95.183	A	partneringgroup.org
64.34.95.211	PTR	bsod.cchapman.net
64.34.95.211	A	ns.saferoute.net
64.34.95.211	A	saferouteinc.com