IPv4 Subnet Calculator (Classful)

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By default, Classful Subnetting is selected.
1. Input the desire IP address

2. Slide the slider bar to select the desire mask bits. The valid range of the mask bits is depend on which class the IP address belongs to.

Information will be calculated dynamically while you change the slider

Select arrow on the top right for next page

Calculated Valid Network Range (Classful)

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1. Select "Next" to display the next valid network range

2. Select "Next 10" to display the next 10 valid network range

All output can be send via email to an email address within the application.


If desire, all result can be email via an in-app email functionality.

IPv4 Subnet Calculator (Classless)

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Select Classless Subnetting
1. Input the desire IP address

2. Slide the slider bar to select the desire mask bits. As it is a classless subnetting, valid mask bits is between 1-32.

Information will be calculated dynamically while you change the slider

Select arrow on the top right for next page

Calculated Valid Network Range (Classless)

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1. Select the desire CIDR subnet to further break down the network.

2. Select "Generate 10 Subnet" to generate next 10 valid network range.


If desire, all result can be email via an in-app email functionality.