Your external IP address is: 54.243.23.129

If your computer is on a private network (behind a hardware firewall or router) then your computer's IP address is only valid in your own local network. When you connect to another machine on the Internet, that machine won't see your internal IP address. Instead it will see you coming form the IP address assigned to your router. That's what the above IP address is.

How do I find my local (internal) IP address?

The instructions vary based on your computer's operating system.