Finding out a foreign IP address - is it possible?

Each user in a network is assigned an IP address. If multiple users are connected to your system, you can easily find out what their IP addresses are. While you read out your own IP address via the user interface of your router, you can find out foreign IP addresses via a terminal command.

How to find out foreign IP addresses

Your router receives a unique IP address from your Internet provider, which you use to navigate the Internet. If you want to read out your own IP address, then this is possible via the user interface of your router or via a terminal command. If you would like to have all foreign IP addresses of the devices output, which are connected with your system, you have likewise different possibilities.

1. About the command "netstat -a" you can have all IP addresses output over the power Shell in Windows. It will display a list of all connections that exist within your local network and the Internet with your system.
2. Pay particular attention here to IP addresses that are outside the private IP space. The private IP space is limited to 10.0.0.0 to 10.255.255.255, 172.16.0.0 to 172.31.255.255, and 192.168.0.0 to 192.168.255.255.
3. To find out who this IP address belongs to, you can use various tools from the Internet, for example. If you know the person in question, this is not a problem. However, if you do not know the origin of the IP address, it is important to do something about the connection. For this, disconnect your system from the Internet and use a virus scanner.