How to Find Out What My Subnet Mask Is

Written by bobson st. pierre
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The subnet mask, a designated number assigned to individual computers in an IP-based network, breaks a large network into a smaller more manageable one or several. Network administrators use various IP Addressing methods and expertise to create the subnet mask. The network administrator will then configure the subnet mask along with other special assign numbers to flow to each individual computer within those networks.

Skill level:
Moderately Easy

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Instructions

  1. 1

    Go to "Start" > "Search" and type "cmd" in the search box and hit "Enter." This will open the command prompt.

  2. 2

    Type the following code in the command prompt: "ipconfig". Press "Enter."

  3. 3

    Look at the information on your command window screen and find the "Subnet Mask" category. You should see a number similar to 255.255.255.000. That number is your subnet mask number.

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