Category Template Notes
Educational institutions ((Shared IP edu|<name>|<host>)) Including schools, colleges and universities.
Public access points ((Shared IP address (public)|<name>|<host>)) Wifi hotspots, public computer terminals, etc.
Governmental source ((Shared IP gov|<name>|<host>)) Government sources, including departments and agencies at all levels.
Non-ISP businesses ((Shared IP corp|<name>|<host>))
Non-shared static IPs ((Whois|<registration info>)) Such as Road Runner Residential.
Shared static IPs ((Static IP|<name>|<host>))
ISP known to generate Dynamic IPs ((Dynamic IP|organization|<name>|<host>)) Such as AOL.
Mobile carrier ((Mobile IP|<name>|<host>)) Such as Telstra Mobile.
Internet service providers ((ISP|<name>|<host>)) Such as Cox Communications. The ISP's name will usually be obvious as to whether or not they are ISPs, or you may wish to search to see if there is a relevant Wikipedia article, and then read the information there to see how it is defined.
Colocation providers ((SharedIPcolocation|<name>|<host>))
Other type of non-ISP organization which may plausibly have shared IPs ((Shared IP|<name>|<host>|<location>))
Miscellaneous and other uses ((whois|<registration info>))

Special cases
Private and Wikimedia Foundation IP addresses ((WMF IP))