Robtex

Up: 64.81.48.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 64.81.48.0/22
Down right: 64.81.52.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
64.81.48.0	A+PTR	dsl081-048-000.sfo1.dsl.speakeasy.net
64.81.48.8	PTR	dsl081-048-008.sfo1.dsl.speakeasy.net
64.81.48.8	A	newatlantis.isle.org
64.81.48.10	PTR	dsl081-048-010.dsl-isp.net
64.81.48.10	A	zibelda.mk2ventures.com
64.81.48.10	A	mail.mk2ventures.com
64.81.48.18	PTR	home.meat.net
64.81.48.18	A	kevinbergner.com
64.81.48.19	PTR	pianosa.catch22.org
64.81.48.19	A	mail.kevinbergner.com
64.81.48.31	A	hellboundhandbasket.net
64.81.48.58	PTR	ramen.quinn.com
64.81.48.72	PTR	thor.piquan.org
64.81.48.72	A	holveck.name
64.81.48.72	A	piqnet.org
64.81.48.107	A	mail.ivigilant.com
64.81.48.112	A+PTR	eagle.vmhome.com
64.81.48.139	PTR	lore.us
64.81.48.169	PTR	www.p6r.com
64.81.48.172	A	mail.crocum.com
64.81.48.179	PTR	vosill.nog.net
64.81.48.199	A	smtp.equipmentsupplyco.com
64.81.48.210	PTR	lore.ca
64.81.49.4	A	dsl081-049-004.sfo1.dsl.speakeasy.net
64.81.49.25	A	xcede.net
64.81.49.178	A	dsl081-049-178.sfo1.dsl.speakeasy.net
64.81.49.254	A	mocek.us
64.81.50.5	A	kevincrisafulli.com
64.81.50.45	A	dsl081-050-045.sfo1.dsl.speakeasy.net
64.81.50.65	A+PTR	thalia.aoaioxxysz.net
64.81.50.65	A	cryptonomi.com
64.81.50.65	A	starshards.org
64.81.50.67	PTR	aglaia.aoaioxxysz.net
64.81.50.98	PTR	dsl081-050-098.sfo1.dsl.speakeasy.net
64.81.51.24	A	*.mytasklist.com
64.81.51.24	A	mytimebilling.com
64.81.51.24	A	mytasklist.com
64.81.51.40	PTR	cancer.dwc-west.net
64.81.51.40	A	learn2c.com
64.81.51.40	A	mybidtool.com
64.81.51.41	PTR	mail.rti-zone.org
64.81.51.57	PTR	experimental.chrisbowman.com
64.81.51.129	A	mx2.foneweb.net
64.81.51.157	A	kindlenotes.net
64.81.51.171	PTR	dsl081-051-171.sfo1.dsl.speakeasy.net
64.81.51.184	PTR	mail.pdc-racing.net
64.81.51.218	A	alliandadam.com
64.81.51.243	PTR	dsl081-051-243.sfo1.dsl.speakeasy.net
64.81.52.4	A	dsl081-052-004.sfo1.dsl.speakeasy.net
64.81.52.10	PTR	dsl081-052-010.sfo1.dsl.speakeasy.net
64.81.52.10	A	philippaerts.net
64.81.52.10	A	mail.philippaerts.net
64.81.52.21	A	julian.arts4all.org
64.81.52.33	PTR	pc2.asani.com
64.81.52.190	A	leicherco.com
64.81.52.190	A	rrendahl.com
64.81.52.190	A	chroniclesofjoy.com
64.81.52.197	A	*.null.bz
64.81.52.197	A	www.null.bz
64.81.52.197	A	null.bz
64.81.52.202	PTR	strlen.net
64.81.52.249	PTR	dsl081-052-249.sfo1.dsl.speakeasy.net
64.81.52.249	A	innmyass.com
64.81.53.7	A	mail.coppi.us
64.81.53.7	A	mail.greenwaretech.com
64.81.53.7	A	mail.highct.com
64.81.53.8	A	dsl081-053-008.sfo1.dsl.speakeasy.net
64.81.53.11	PTR	abunai.musubi.org
64.81.53.17	A	www.grtimp.com
64.81.53.17	A	mail1.grtimp.com
64.81.53.17	A	gins1.grtimp.com
64.81.53.19	A+PTR	dsl081-053-019.sfo1.dsl.speakeasy.net
64.81.53.33	A	mail.pcs-techs.com
64.81.53.33	A	pcs-techs.com
64.81.53.33	A	pcsmail.pcs-techs.com
64.81.53.83	PTR	dsl081-053-083.sfo1.dsl.speakeasy.net
64.81.53.83	A	stompychompyspikey.com
64.81.53.83	A	chapelhillcomic.com
64.81.53.112	A	two.alameda.net
64.81.53.113	A	three.alameda.net
64.81.53.114	A+PTR	four.alameda.net
64.81.53.120	PTR	mail.alameda.net
64.81.53.129	A	hostmaster.biologicdesigns.com
64.81.53.129	A	biologicdesigns.com
64.81.53.129	A	mail.biologicdesigns.com
64.81.53.146	PTR	dsl081-053-146.sfo1.dsl.speakeasy.net
64.81.53.146	A	meatwax.com
64.81.53.146	A	mail.meatwax.com
64.81.53.240	PTR	dsl081-053-240.sfo1.dsl.speakeasy.net
64.81.54.5	A	alpinebutterfly.org
64.81.54.5	A	mail.alpinebutterfly.org
64.81.54.5	A	shiva.alpinebutterfly.org
64.81.54.82	PTR	dsl081-054-082.sfo1.dsl.speakeasy.net
64.81.54.82	A	carolnrob.net
64.81.54.130	PTR	gateway.sf.frob.com
64.81.54.147	A	ypp.ized.com
64.81.54.154	PTR	goodman.eppi.com
64.81.54.165	A	dsl081-054-165.sfo1.dsl.speakeasy.net
64.81.54.206	A	localhost.nosnobs.com
64.81.54.206	A	zinczar.com
64.81.54.206	A	nosnobs.com
64.81.54.251	A	misterpotatohead.com
64.81.55.10	A	dadbank.com
64.81.55.17	PTR	uruk.org
64.81.55.54	A	maikowoodson.com
64.81.55.54	A	explere.com
64.81.55.54	A	mendozafamily.net
64.81.55.76	A	wormhole.sixg.com
64.81.55.90	PTR	dsl081-055-090.sfo1.dsl.speakeasy.net
64.81.55.90	A	jayj.com
64.81.55.107	A	ns2.sightdesign.com
64.81.55.123	PTR	nizzles.net
64.81.55.164	A	mike.taniwha.com
64.81.55.170	PTR	dsl081-055-170.sfo1.dsl.speakeasy.net
64.81.55.170	A	philwhite.org
64.81.55.170	A	angelawhite.org
64.81.55.185	PTR	dsl081-055-185.sfo1.dsl.speakeasy.net
64.81.55.187	PTR	istumbler.net
64.81.55.235	PTR	dsl081-055-235.sfo1.dsl.speakeasy.net
64.81.55.235	A	confabulist.com
64.81.55.236	A	ianandtessa.com
64.81.55.240	PTR	dsl081-055-240.sfo1.dsl.speakeasy.net
64.81.55.240	A	mad-deer.com
64.81.55.248	PTR	streamborn.com
64.81.55.248	A	mail.streamborn.com