Network
Subnet / CIDR Calculator
Subnet Calculator
Enter an IP address with CIDR prefix length to calculate subnet details.
Quick Presets
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Enter an IP address with CIDR prefix (e.g. 10.0.0.0/8)
Tool Features
Complete IPv4 subnet analysis
CIDR Calculation
Calculate network, broadcast, and host ranges from CIDR notation
Subnet Math
Network mask, wildcard mask, first & last usable hosts
IP Classification
Identify IP class, private ranges, and address type
Binary View
See network and mask in binary format