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IPv4 Subnet (CIDR) Calculator
Enter an IP and prefix to get the network and broadcast addresses, usable host range, subnet mask and wildcard - with exact 32-bit maths.
IPv4 address & prefix
Enter any host IP and a CIDR prefix (/0-/32). We compute the network, broadcast, host range and masks with exact 32-bit binary maths. /31 (RFC 3021) and /32 are handled correctly.
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