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Network

IPv4/IPv6, CIDR, and subnet calculators — pure browser math.

4 ready tools out of 4 listed in this workflow.

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4

IPv4 Subnet CalculatorReadyNetwork, broadcast, host range, mask, and class from an IP + prefix.
IPv6 CalculatorReadyExpand, compress, and derive the reverse-DNS of any IPv6 address.
CIDR CalculatorReadyTurn a CIDR block into its address range, mask, and host count.
Subnet CalculatorReadyPlan subnets: network, usable range, broadcast, and mask.