Router Admin Setup: Router Setup Page is a free utility that can be used to find your default gateway and configure it. You don't need to enter any information and you don't need to be connected to the Internet. The app uses a number of different tools to determine your network's IP address, including the network type, the IP address, and the gateway. You can also determine the network's subnet mask and the IP address of the DNS server.

If you have a number of networks on your computer, you can also easily find the network you want to configure. The app supports both Wi-Fi and Ethernet connections. The app also has a built-in database of popular router brands.

You can also use the app to view the current state of your network. The app can also be used to determine the IP address of a device on your network.