That's its IP address within your local network (ie. the connection between your PC and the router). The public facing IP address (ie. the address that a website sees when you are visiting it -- or a node connecting to your node, for that matter) is a different address and provided to you by your ISP.

Depending on your ISP and router setup this may be an old school IPv4 address (like 192.168.1.254) or a shiny new IPv6 address (like 0:0:0:0:0:0:0:0 just with actual values instead of zeroes).