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Subnet Mask Calculator

Calculate subnet information from IP address and CIDR notation. Get network address, broadcast, and host ranges.

IP Address & CIDR

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Results

Enter IP and CIDR to calculate subnet information

How to Use

  1. 1

    Enter an IP address

  2. 2

    Select CIDR notation (subnet mask)

  3. 3

    Click 'Calculate' to see subnet details

  4. 4

    Shows network address, broadcast, usable host range, and more.