Robtex

Up: 66.249.20.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 66.249.20.0/25
Down right: 66.249.20.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
66.249.20.4	PTR	66.249.20.4
66.249.20.5	A	johannesjensen.dk
66.249.20.5	A	mail.johannesjensen.dk
66.249.20.5	A	mail.quick-data.dk
66.249.20.6	A	martinealicia.com
66.249.20.10	A	mail.planitjewish.com
66.249.20.27	A+PTR	smtpcom.51email.net
66.249.20.27	A	newsletter.51email.net
66.249.20.29	A	globaldatingrevolution.com
66.249.20.29	A	www.globaldatingrevolution.com
66.249.20.46	PTR	coldcrossing.com
66.249.20.50	PTR	50.20.249.66.in-addr.arpa
66.249.20.53	PTR	ty.by
66.249.20.54	PTR	umbagu.net
66.249.20.56	A	56.20.249.66.in-addr.arpa
66.249.20.66	A	mzm.adventist.org
66.249.20.70	PTR	mepho.net
66.249.20.76	A	ipoll.tv
66.249.20.86	PTR	www.arneson.name
66.249.20.93	A+PTR	vps1.nagater.net
66.249.20.98	A	ns1.jleyrer.net
66.249.20.98	A	ns2.jleyrer.net
66.249.20.104	PTR	psai-cre.com
66.249.20.118	PTR	yosemitefund.org
66.249.20.127	PTR	66.249.20.127
66.249.20.134	A+PTR	mailbackup.xenorg.com
66.249.20.145	A	ns2.anicca.ru
66.249.20.150	PTR	www.hoodr.com
66.249.20.150	A	hoodr.com
66.249.20.150	A	buh.sj.ca.us
66.249.20.156	PTR	156.20.249.66.in-addr.arpa
66.249.20.162	A+PTR	mx1.naulink.com
66.249.20.162	A	naulink.com
66.249.20.162	A	*.naulink.com
66.249.20.163	A	vpn.naumail.com
66.249.20.169	PTR	gloucestertownshipnews.com
66.249.20.169	A	mail.gtrmc.org
66.249.20.169	A	gtrmc.org
66.249.20.171	PTR	boosthardware.com
66.249.20.172	PTR	extralargemail.com
66.249.20.180	A+PTR	moby.franservices.com
66.249.20.180	A	mail.ufocplus.com
66.249.20.180	A	mail.fddplus.com
66.249.20.200	PTR	66.249.20.200
66.249.20.200	A	ns9.mijnbedrijf.com
66.249.20.214	PTR	gameslinked.com
66.249.20.216	PTR	tmbw.net
66.249.20.234	PTR	builtbp.com
66.249.20.246	PTR	66.249.20.246