You can't get IP banned from nexon, PERIOD. You can only get IP banned if you are outside of America. Also, it is much harder to change your IP address if you have a router. Why? Because the router gives you an IP such as "192.168.**.*" so you can connect to the router and it won't be changed from a simple CMD Command. From your router, you can change your IP address by changing your mac address and restarting your modem/router.