Robtex

Up: 66.210.8.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 66.210.12.0/23
Down right: 66.210.14.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
66.210.12.1	A+PTR	ns1.ourwebhost.com
66.210.12.1	A	comparemycoverage.com
66.210.12.2	A	ns2.ourwebhost.com
66.210.12.3	A	ns3.ourwebhost.com
66.210.12.4	A+PTR	ns4.ourwebhost.com
66.210.12.5	A+PTR	gateway.webcac.com
66.210.12.7	A+PTR	mailrelay2.webcac.com
66.210.12.8	A	vpn.webcac.com
66.210.12.16	A	mail.wccit.com
66.210.12.101	A	streaming1.webcac.com
66.210.12.113	A	collegegrad.webcac.com
66.210.12.220	A+PTR	connect.webcac.com
66.210.12.246	A	hamptongw.webcac.com
66.210.12.252	A	ksbroadbandgateway.webcac.com
66.210.13.1	A	slappys.net
66.210.13.1	A	www.slappys.net
66.210.13.2	PTR	ecspc.biz
66.210.13.17	PTR	www.mmorpgauction.com
66.210.13.17	A	theleague.net
66.210.13.22	PTR	mail.keys.org
66.210.13.24	PTR	kacil.org
66.210.13.30	PTR	davevaughn.com
66.210.13.39	A	www.ourwebhost.com
66.210.13.43	A	clanhosting.biz
66.210.13.58	PTR	ksbroadband.net
66.210.13.65	PTR	lundgrindds.com
66.210.13.68	PTR	amerivans.com
66.210.13.84	PTR	webcac.com
66.210.13.84	A	webcreationsandconsulting.com
66.210.13.86	PTR	geislerroofing.com
66.210.13.87	A	couponcaptain.com
66.210.13.101	PTR	tririversfair.org
66.210.13.120	A+PTR	enconline.com
66.210.13.131	PTR	www.drsdriverandclark.com
66.210.13.133	A	emspaplus.com
66.210.13.151	A	salinasupply.com
66.210.13.191	PTR	kasafab.com
66.210.13.215	PTR	e-keller.com
66.210.13.228	PTR	spidersave.com
66.210.13.230	A	exlineusergroup.com
66.210.13.250	A	scream.ourwebhost.com
66.210.13.252	A	mysterio.ourwebhost.com
66.210.14.60	PTR	mail.lundgrindds.com
66.210.14.76	PTR	mail.gamersink.com
66.210.14.77	PTR	mail.rhrjc.org
66.210.14.81	PTR	mail.elyesoranch.com
66.210.14.86	PTR	mail.geislerroofing.com
66.210.14.233	PTR	mail.theleague.net
66.210.14.250	PTR	mail.webcac.com
66.210.14.250	A	mail.senecasoft.com
66.210.14.250	A	mail.couponcaptain.com
66.210.14.252	A	relay2.webcac.com
66.210.14.253	A+PTR	mail.webcreationsandconsulting.com
66.210.15.36	A	www.sschd.org
66.210.15.37	A	www.salinesheriff.org
66.210.15.134	A	breeze.webcac.com
66.210.15.136	A	punch.webcac.com
66.210.15.136	A	housebeautifulsoftware.com