Originally posted by: Crafty35a
The router itself is basically assigned an IP address from the ISP. All internet traffic flows through that router, then is directed by the router wherever it needs to go within the home network. The PC's actual network IP address is irrelevant, because the router is communicating with the outside world via the IP address assigned to it from the ISP. The cops then presumably used that ISP address to attain an actual street address from the ISP. Hope that makes some sense, I may not have been very clear.