Robtex

Up: 66.54.72.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 66.54.76.0/23
Down right: 66.54.78.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
66.54.77.7	PTR	static-77-7.nokia.net
66.54.77.7	A	sip.it.here.com
66.54.77.10	PTR	static-77-10.nokia.net
66.54.77.10	A	sip.it.here.com
66.54.78.8	A	jlrdocus.jlrext.com
66.54.78.10	A	allthingsnav.navigation.com
66.54.78.11	A+PTR	www.navigation.com
66.54.78.11	PTR	navigation.com
66.54.78.11	A	updateemail.navigation.com
66.54.78.17	PTR	static-78-17.nokia.net
66.54.78.17	A	acuranavi.com
66.54.78.17	A	acuranavi.navigation.com
66.54.78.44	PTR	static-78-44.nokia.net
66.54.78.44	A	navteq.com
66.54.78.44	A	mapupdate.navigation.com
66.54.78.57	PTR	static-78-57.ptr.here.com
66.54.79.172	PTR	static-79-172.nokia.net