I've never seen the I.P. address or the system password on the back of a router.
Sometimes the default wireless security key but not always.
You don't need to have any particular I.P. address set to be able to see the router over wireless, only if you're using a wired connection.
You must work with some crap routers. Every router I've used have the default settings right on the back.
And if you don't know the IP of the router how will you access it's settings, seeing as one does so by browsing to it's IP and entering the user & pass? Sure, you are able to 'see' the router, or rather it's SSID if it is broadcasting, but that wasn't the question. The question was about checking and changing it's settings and to do that you need to know the IP, user and pass. That is why the default values, what it will be set to if you reset it, are on the label of the router.

If your default values are not on the label, they will be in the manual. How else will users know how to access the router to set it up when they get it, guess??







