How to find out the subnet mask?

Julia Bukatova
Julia Bukatova
April 2, 2015
How to find out the subnet mask?

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How to find out the subnet mask?

Quite often, when setting up Internet connections, we need to know our IP address, default gateway and subnet mask. And although it seems to the average person that this information is available exclusively for specialists, we will dispel this myth and tell you how to find out the subnet mask using the Windows operating system settings.

How to determine the subnet mask

In order to find out the mask of your subnet in Windows OS, you need to view the network connection settings. This can be done with the following commands:

  1. Go to the "Start" menu, which is usually located on the toolbar, select the "Settings" tab, and then the "Network Connections" tab. In the latest versions of Windows, the Start menu can be accessed by pressing the Win key on the keyboard or by clicking the Windows icon in the lower left corner of the screen.
  2. How to know the subnet maskThe window that appears will display all your network connections at the moment. If there are no network connections yet, then you need to create them.
  3. After the network connection is opened, you need to click on its icon with the mouse and in the pop-up menu click the "Properties" tab. Next, select the "Components to use when connecting" window.
  4. Then you need to find the item "Internet Protocol (TCP / IP)" and click on it with the left mouse button. This will give you the opportunity to activate the "Properties" button. If you click on this button, then in the appeared window you will see your IP address and subnet mask.

Another way you can define a subnet mask is using the Windows command line. You can call the command line in two ways:

  • Click the "Start" button, select "All Programs", then "Standard" and, finally, "Command Prompt";
  • on the keyboard, press simultaneously the two keys "Win" and "R", in the dialog box that appears, type the command "cmd" and press the "OK" button.

Open a command prompt, type the command "ipconfig" in it and press the "Enter" key. So you can see your subnet mask.

Having learned all the necessary parameters, you can easily and with someone’s help continue setting up Internet connections.