Robtex

Up: 64.81.80.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 64.81.80.0/22
Down right: 64.81.84.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
64.81.80.0	PTR	dsl081-080-000.lax1.dsl.speakeasy.net
64.81.80.28	A	mail.tridentranch.com
64.81.80.42	A	mail.donnachaney.com
64.81.80.42	A	mail.chaneyfinancial.com
64.81.80.42	A	donnachaney.com
64.81.80.56	A	webmail.westcoastmusic.com
64.81.80.184	A	dsl081-080-184.lax1.dsl.speakeasy.net
64.81.80.201	PTR	cog.ath.cx
64.81.80.209	PTR	dsl081-080-209.lax1.dsl.speakeasy.net
64.81.80.209	A	mail.2531.org
64.81.80.209	A	madfu.net
64.81.80.223	A	raddguy.com
64.81.80.223	A	sarley.com
64.81.81.1	A+PTR	dsl081-081-001.lax1.dsl.speakeasy.net
64.81.81.14	A	ultraxbox.com
64.81.81.19	A+PTR	dsl081-081-019.lax1.dsl.speakeasy.net
64.81.81.25	A	dsl081-081-025.lax1.dsl.speakeasy.net
64.81.81.26	A+PTR	dsl081-081-026.lax1.dsl.speakeasy.net
64.81.81.37	A	dsl081-081-037.lax1.dsl.speakeasy.net
64.81.81.66	A+PTR	dsl081-081-066.lax1.dsl.speakeasy.net
64.81.81.74	A+PTR	dsl081-081-074.lax1.dsl.speakeasy.net
64.81.81.74	A	boxhead.com
64.81.81.74	A	*.boxhead.com
64.81.81.130	PTR	dsl081-081-130.lax1.dsl.speakeasy.net
64.81.81.130	A	hartui.com
64.81.81.135	A	mail.stewartplaza.com
64.81.81.135	A	stewartplaza.com
64.81.81.192	PTR	oakportal.net
64.81.81.195	PTR	roachware.net
64.81.81.197	A	nowthis.org
64.81.81.220	A	mobiwager.com
64.81.81.228	A	isis.cs3-inc.com
64.81.81.228	A	losangelesyouthorchestra.org
64.81.81.245	A	dsl081-081-245.lax1.dsl.speakeasy.net
64.81.82.17	PTR	dsl081-082-017.lax1.dsl.speakeasy.net
64.81.82.17	A	mail.jagsystems.com
64.81.82.17	A	jagsystems.com
64.81.82.53	A	deadlytreasures.com
64.81.82.53	A	mail2.deadlytreasures.com
64.81.83.3	PTR	kellyj.deltacode.com
64.81.83.20	A	dsl081-083-020.lax1.dsl.speakeasy.net
64.81.83.40	A	b.ns.volfx.com
64.81.83.40	A	a.ns.constructive.biz
64.81.83.65	A	dsl081-083-065.lax1.dsl.speakeasy.net
64.81.83.105	PTR	ld.og.net
64.81.83.165	A	mail.odcnet.com
64.81.83.187	A	mail.criminalattorney.com
64.81.83.193	PTR	dsl081-083-193.lax1.dsl.speakeasy.net
64.81.83.197	A	astracultura.com
64.81.83.222	A	dsl081-083-222.lax1.dsl.speakeasy.net
64.81.83.225	PTR	dsl081-083-225.lax1.dsl.speakeasy.net
64.81.83.225	A	niteswim.com
64.81.83.230	A	mail.cstar.com
64.81.83.236	A	mail.fedindustries.com
64.81.84.9	A+PTR	dsl081-084-009.lax1.dsl.speakeasy.net
64.81.84.19	A	smtp2.coradv.com
64.81.84.19	A	smtp2.corfunds.com
64.81.84.19	A	smtp2.corbdc.com
64.81.84.33	PTR	llpla.com
64.81.84.77	A	mail.baileymooreproperties.com
64.81.84.88	PTR	mail.ntvideo.net
64.81.84.120	A+PTR	mail2.canyondesigngroup.com
64.81.84.120	A	mail2.canyonla.com
64.81.84.120	A	mail2.canyonbrandgroup.com
64.81.84.228	A	dsl081-084-228.lax1.dsl.speakeasy.net
64.81.85.6	A	dsl081-085-006.lax1.dsl.speakeasy.net
64.81.85.14	A	mikehirsch.com
64.81.85.14	A	allykat.com
64.81.85.14	A	hostmaster.mikehirsch.com
64.81.85.76	A	worldclasslover.com
64.81.85.103	A	dsl081-085-103.lax1.dsl.speakeasy.net
64.81.85.121	PTR	elite.org.il
64.81.85.121	A	ns2.inntra.net
64.81.85.145	PTR	iggy.fringehead.org
64.81.85.145	A	kennfusion.com
64.81.85.150	A	mail.ershold.com
64.81.85.150	A	ershold.com
64.81.85.152	PTR	phunq.net
64.81.85.248	A+PTR	dsl081-085-248.lax1.dsl.speakeasy.net
64.81.85.248	A	lagunaefc.org
64.81.85.248	A	*.lagunaefc.org
64.81.86.78	A	mail.sbwright.com
64.81.86.104	PTR	pevanslawoffice.com
64.81.86.136	A	dsl081-086-136.lax1.dsl.speakeasy.net
64.81.86.175	A	mail.veritaswine.com
64.81.86.175	A	veritaswine.com
64.81.86.175	A	dsl081-086-175.lax1.dsl.speakeasy.net
64.81.86.211	PTR	ns1.napoleonicmedals.org
64.81.86.211	A	footprintsproductions.us
64.81.86.211	A	footprintsproductions.info
64.81.86.224	PTR	xitac.com
64.81.86.228	A	mail2.edic-usa.com
64.81.86.232	A	partsgrabber.com
64.81.86.232	A	motorgroove.com
64.81.87.5	A	dsl081-087-005.lax1.dsl.speakeasy.net
64.81.87.55	A	earltracool.com
64.81.87.88	A+PTR	dsl081-087-088.lax1.dsl.speakeasy.net
64.81.87.88	A	ljge.com
64.81.87.116	A	dsl081-087-116.lax1.dsl.speakeasy.net
64.81.87.134	A	mail.squareoneinc.com
64.81.87.163	A+PTR	mail.popeassoc.com
64.81.87.163	A	popeassoc.com
64.81.87.198	A	lorilindland.com
64.81.87.198	A	landoflind.com
64.81.87.223	A	mail.anastazya.com
64.81.87.223	A	giftswithjoy.com
64.81.87.223	A	mail.giftswithjoy.com