Those 192.168.x.x addresses are private addresses not seen outside your home network. The actual address that is seen outside your network is a single public address assigned to your modem or router. You can see this address by typing in "my ip address" in to Google, or go to any other available sites that display your IP address.
Therefore, a site accessed by any computer on your network will see the connections as coming from one address.
ok here is my scenario: at my house we have high speed internet through cox cable. the internet comes in through a coaxial cable to our modem, then it goes to a wired / wireless router. I have 1 desktop (that's mine) that's connected to the router by a cat5 cable ,and 2 laptops (my roommates) that are wifi to the router .
now here is my question: there is a casino that I play at that has closed my account because they say I have more than 1 account coming from the same IP. now, when we pull up the IP addresses in each pc they are all different by at least I digit . for example my desktop 192.168.0.1. and one of the laptops 192.168.0.3, and the other laptop 192.168.0.4., and yes 1 of my roommates does go to the same casino as I do and got his account closed also with the same accusations .
now how can they say that there is more than 1 account coming from the same IP address when clearly there is a digit difference at the end of each one of the IP addresses . just how are we seen by people on the internet. 3 computers coming from 1 IP or 3 different IP addresses coming from 1 location ?