TP-link Router login to the admin panel requires a default IP Address – 192.168.0.1 or 192.168.1.1. Any one of both. You should enter this default IP address at the Addy of the browser. And then, enter the username and password, which is an admin in most cases of the Tplink WIFI router. After accessing the TP-Link administrative panel of your router, you should change the username and password.