Subnet Calculator
IPv4 ranges, masks and host counts as you type.
Runs entirely in your browser. Nothing is sent anywhere.
Takes an IPv4 address and prefix (or CIDR like 10.0.0.0/8) and works out the network, broadcast, host range, masks, host counts and address type.
You can also paste CIDR notation, like 10.0.0.0/8.
Try
Network
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ClickTap any value to copy it.
In binary network bits bold, host bits light
- Address
- Mask