In order to find the default gateway IP address of your computer, we need to use the command prompt application.
In this post, you will be able to find the default gateway IP address, MAC Address, IPv4 IP address, Subnet Mask & DNS Servers of your computer’s LAN adapter and wireless network adapter.
What is the gateway IP address?
The gateway IP address is the IP address of your device in which all traffic coming from the public network to your private local network passes by. Usually, it is the IP address of your local router or network firewall.
What is Command Prompt?
Command Prompt is an executable file that interacts with the user through command-line interface and implemented through Win32 console.
Among common commands are ping and tracert, they are very useful in tracking packets and diagnosing network connection.
How to find the default gateway?
Step 1. From the search bar, type in CMD then hit ENTER. To get administrative access, right click the program then select run as administrator.
A window will open (Command Line Interface)

Step 2. Type in ipconfig /all or simply ipconfig
Step 3. Scroll down and look for the active network adapter, in my case, I’m using a wireless network adapter. Here you can find the Name and physical address of your Wi-Fi adapter, the local IP address or IPv4 Address, Subnet Mask, Default Gateway, and your DNS Servers

Note down your default gateway address, to access your routers configuration, open web browser and type the default gateway, use prefix http:// followed by the ip.