technically right, but those are just more commonly known as private ip addresses. (or private address space). they can be used on any network with any topology. these addresses are not routable outside the intranet network. (basically you cant connect to them). i personally use and like the 10.*.*.* address space because it has the most ip's available for a network (and subnets), and its the easiest to remember. but for some reason (i have no idea why) companies like to default there routers to use the 192.168.*.* address space.

Excerpt from RFC1918 (HERE):

3. Private Address Space

The Internet Assigned Numbers Authority (IANA) has reserved the
following three blocks of the IP address space for private internets:

10.0.0.0 - 10.255.255.255 (10/8 prefix)
172.16.0.0 - 172.31.255.255 (172.16/12 prefix)
192.168.0.0 - 192.168.255.255 (192.168/16 prefix)