Robtex

Up: 64.38.116.0/22
Can't show all results, try to descend to a more specific CIDR
Down left: 64.38.116.0/24
Down right: 64.38.117.0/24
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
64.38.116.9	A	lbsftp.com
64.38.116.10	A	www.dingbone.com
64.38.116.10	A	mail.lookugly.com
64.38.116.10	A	lookugly.com
64.38.116.12	A	mail5.canadaisforfree.com
64.38.116.12	A	mail2.rewardtags.info
64.38.116.12	A	mail2.401-info.com
64.38.116.14	A	www.unsubscore.com
64.38.116.14	A	lashback.net
64.38.116.14	A	unsubscore.com
64.38.116.20	PTR	mail.lashback.com
64.38.116.26	A	mail5.canadaisforfree.com
64.38.116.26	A	mail5.perisail.com
64.38.116.26	A	mail1.universalaccess.us
64.38.116.27	A	mail2.401-info.com
64.38.116.27	A	mail3.martha-stewart.biz
64.38.116.27	A	mail3.bestfornothing.com
64.38.116.28	A	mail3.martha-stewart.biz
64.38.116.28	A	mail4.get-the-tech.com
64.38.116.28	A	mail3.bestfornothing.com
64.38.116.29	A	mail1.universalaccess.us
64.38.116.29	A	mail1.primacyofexistence.com
64.38.116.29	A	mail4.get-the-tech.com
64.38.116.50	A	fudgerub.com
64.38.116.50	A	tempinbox.com
64.38.116.50	A	blacklist.lashback.com
64.38.116.52	A	mail.nullenergy.com
64.38.116.52	A	mail.youshallnotemail.com
64.38.116.52	A	mail.donotsendhere.com
64.38.116.53	A	mail3.shinedyoureyes.com
64.38.116.54	A	mail.fudgerub.com
64.38.116.54	A	mail2.beefmilk.com
64.38.116.54	A	mail4.beefmilk.com
64.38.116.57	A	mail.lookugly.com
64.38.116.57	A	mail.dingbone.com
64.38.117.11	PTR	vis.weicia.com
64.38.117.24	PTR	hah.weicia.com
64.38.117.100	PTR	anchuaz.com
64.38.117.106	PTR	eulogiae.anchuaz.com
64.38.117.118	PTR	slightly.anchuaz.com
64.38.117.150	PTR	vogueco.com
64.38.117.151	PTR	schmucks.vogueco.com
64.38.117.188	PTR	ass.vogueco.com
64.38.117.228	PTR	bop.repnama.com