Robtex

Up: 66.90.32.0/19
Can't show all results, try to descend to a more specific CIDR
Down left: 66.90.48.0/21
Down right: 66.90.56.0/21
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
66.90.48.50	A+PTR	66-90-48-50.node.smartcity.net
66.90.48.77	A	66-90-48-77.node.smartcity.net
66.90.48.97	PTR	66-90-48-97.node.smartcity.net
66.90.48.173	A	66-90-48-173.node.smartcity.net
66.90.50.3	PTR	node.smartcity.net
66.90.50.161	A	mail.vworkz.com
66.90.50.203	A	spanishdrills.com
66.90.50.203	A	lingodrills.com
66.90.50.203	A	questionmyfriends.com
66.90.51.3	A	kiosk-filter.smartcitytelecom.com
66.90.51.5	A+PTR	citylimits.smartcitytelecom.com
66.90.51.5	PTR	ftp.smartcity.net
66.90.51.7	A	ns1.smartcitytelecom.com
66.90.51.9	A	as400.smartcitytelecom.com
66.90.51.21	A	demo.smartcitytelecom.com
66.90.51.28	A+PTR	mail2.smartcitytelecom.com
66.90.51.43	A	wdwbilling.com
66.90.51.50	PTR	mailtest-dc
66.90.51.50	PTR	multimedia.sct.com
66.90.51.52	PTR	node.smartcity.net
66.90.51.53	PTR	node.smartcity.net
66.90.51.62	A	ftp.smartcitytelecom.com
66.90.51.62	A	sctftp.smartcitytelecom.com
66.90.51.65	A+PTR	mail.smartcitytelecom.com
66.90.51.71	A	mail.smartcitypartners.com
66.90.51.71	A	mail.sctpartners.com
66.90.51.71	A	smartcitypartners.com
66.90.51.90	A+PTR	apmax.smartcitytelecom.com
66.90.51.93	PTR	www.smartcitytelecom.com
66.90.51.93	A	eventpathanaheim.com
66.90.51.93	A	www.smartcity.net
66.90.51.99	A	mail3.smartcitytelecom.com
66.90.51.104	A	merlin.smartcitytelecom.com
66.90.51.131	A	r2000.smartcitytelecom.com
66.90.51.165	A	mail.uscable.com
66.90.51.177	PTR	mn-d01-01-vlan777.smartcitytelecom.com
66.90.51.177	A	dizcolors.com
66.90.53.4	A	exchange.villadirect.com
66.90.53.4	A	exchange.vrs-soft.com
66.90.53.241	PTR	node.smartcity.net
66.90.54.129	PTR	node.smartcity.net
66.90.54.144	PTR	node.smartcity.net
66.90.54.208	PTR	node.smartcityon-line.com
66.90.55.26	A	mail.sanpedrocenter.org
66.90.55.122	A	lhlaworlando.com
66.90.55.122	A	mail.lhlaworlando.com
66.90.55.222	A	www.mpinet.com
66.90.57.17	PTR	node.smartcity.net
66.90.57.179	PTR	node.smartcityon-line.com
66.90.57.225	PTR	node.smartcityon-line.com
66.90.59.11	A	gs-lounge.com
66.90.59.129	A	mail.shadesofgreen.org
66.90.59.131	A	reservations.shadesofgreen.org
66.90.60.177	PTR	node.smartcity.net
66.90.61.114	A	ns3.sgginteractive.com
66.90.61.114	A	mail.sggmail.com
66.90.61.130	A	mail2.mvtservice.com
66.90.62.18	PTR	server.drsmart.com
66.90.62.53	A	mail.jaorlando.org
66.90.62.67	PTR	node.smartcity.net
66.90.62.131	PTR	node.smartcityon-line.com
66.90.62.218	A	mail.dbpgllc.com
66.90.63.4	A	mail.peterstrialgroup.com
66.90.63.12	A	mail1.selkreggtech.com
66.90.63.19	A	*.michaelmjohnson.com
66.90.63.20	A	prangpowerdev.com
66.90.63.21	A	prangpowerdev2.com
66.90.63.30	A	mail.sellbacktimeshares.com
66.90.63.243	PTR	node.smartcityon-line.com
66.90.63.243	A	independentbar.net
66.90.63.243	A	mail.independentbar.net