I recently came into possession of two Frontier modems (modem/router). My dad likes the idea of using one of them because they can be switched off and on. However, our ISP is not Frontier; can we still use these routers even though we aren't using that ISP?
If this information helps, they were manufactured by NetGear and are approximately four years old (we also don't know their password(s)).
Note: This is not a cable router :)