Robtex

Up: 66.64.32.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 66.64.32.0/22
Down right: 66.64.36.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
66.64.32.82	PTR	sps1.kalmot.com
66.64.32.138	A	mail.southlaketownsquare.com
66.64.32.158	A	azraiarmin.com
66.64.32.158	A	paramountinmotion.com
66.64.32.158	A	mynorthstardental.com
66.64.32.194	A	ns2.ccp4u.com
66.64.32.194	A	ns2.marriagecounselinginsurance.com
66.64.32.194	A	ns2.insuranceforyourbiz.com
66.64.32.206	A	www.ccp4u.com
66.64.32.227	A	owa.ljcm.com
66.64.32.228	A	barracuda.ljcm.com
66.64.33.90	A	mail.sawyerdesignassociates.com
66.64.33.90	A	mail.rcmaxpowerusa.com
66.64.33.189	A	zamorasolutionsllc.com
66.64.33.189	A	remote.zamorasolutionsllc.com
66.64.33.210	PTR	mx5.dns-tx.com
66.64.34.25	A	gateway.actionlogistics.us
66.64.34.28	A	metricsreports.actionlogistics.us
66.64.34.98	PTR	imap.oant.net
66.64.34.98	PTR	mail.oant.net
66.64.34.182	PTR	mail.cookfs.com
66.64.35.162	PTR	mail.spsd.com
66.64.35.186	A	mail2.rhsweeney.com
66.64.35.202	A	mail.ckkhome.com
66.64.36.21	A+PTR	mail.basiccomp.com
66.64.36.22	PTR	mail.basiccomp.com
66.64.36.22	A	mail2.basiccomp.com
66.64.36.34	A	mail.shiromasouthwest.com
66.64.36.98	A+PTR	mail.smalouf.com
66.64.36.98	A	smalouf.com.2.arsmtp.com
66.64.36.115	A	smtp.claimsnet.com
66.64.36.122	A	mail.forgarb.com
66.64.36.243	A	mail.lynnkaminski.com
66.64.36.245	PTR	ns1.kaminskiinterests.com
66.64.37.66	A	fw.brandfxbody.com
66.64.37.68	A+PTR	mail.brandfxbody.com
66.64.37.68	A	mail.gemtopmfg.com
66.64.37.82	A	mail.highprofilestaffing.com
66.64.37.149	A	tssemail.teamsalessupport.com
66.64.37.226	A	netwavecom.com
66.64.38.2	PTR	heartcenterofnorthtexas.com
66.64.38.51	PTR	remote.n3realestate.com
66.64.38.130	PTR	mail.castlegatehomes.com
66.64.38.181	A	mailserver.twistsolutions.com
66.64.39.21	A+PTR	yearbookupdates.com
66.64.39.50	A+PTR	mail.totalbuildingmaintenance.com
66.64.39.50	A	remote.totalbuildingmaintenance.com
66.64.39.50	A	mail.tbm-corp.com
66.64.39.202	PTR	ns1.creativetype.com
66.64.39.228	A	mail.grandenergy.com
66.64.39.254	A	mail.strlaw.net