This is a quite useful service, especially for technicians to find default passwords used not only on routers, but also on default web logins, CCTV systems, and other electronic devices. Note: RouterPasswords is the largest free online database of default router passwords driven by the online community. You can also contribute, if you know a password, which is not listed on RouterPasswords. Note: If you had changed the default router password, then you can reset it to default by pressing the reset button (shown at backside) for about 10 to 30 seconds.