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Subnet Calculator

Automated VLSM calculator!

For the best experience: Use Microsoft Edge or Google Chrome (Tested). Updated Math script

Madman O meter


Input:Quick Actions:
IP Address / Subnet Mask Quick store Quick Fill
Output:
IP Address:Copy
Subnet Mask:Copy
Network Address:Copy
Broadcast Address:Copy
First Host Address:Copy
Last Host Address:Copy
Next Network:Copy
Hosts:Copy
Networks:Copy

Info + Quick start guide

Full guide

A full guide can be found by clicking here.

Click here to open the VLSM Storage table


Link to cisco page

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