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IP Subnet Calculator
Calculate subnet details from IP address and CIDR notation.
CIDR /24 = 256 IPs, 254 usable hosts. /16 = 65,536 IPs. /32 = single host. Common private ranges: 192.168.x.x/24 (home networks), 10.x.x.x/8 (corporate), 172.16–31.x.x/12 (medium networks).
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