IPv4 Subnet Calculator

Calculate network, broadcast, subnet mask, wildcard mask, host range, and address membership from an IPv4 CIDR block.

IPv4 CIDR block

Check IP (optional)

Enter an IPv4 address with CIDR prefix, such as 10.0.0.8/29. The optional check IP tells you whether a second address falls inside the calculated subnet.

Network Address

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Broadcast Address

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Subnet Mask

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Wildcard Mask

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First Usable Host

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Last Usable Host

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Total Addresses

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Usable Hosts

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CIDR

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Block Size

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Check IP

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Interpretation

Enter an IPv4 CIDR block to calculate the subnet.

Ready.