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dev.sdk-subnet-cidr Calculator
Calculates CIDR subnet mask, usable host range, broadcast address, and network address for a given IP block in a SDK and library engineering context. A /24 CIDR block provides 254 usable hosts; /25 gives 126 — each additional prefix bit halves the usable host count.
Inputs
Cidr Prefix
Reference formula or conversion factor shown for context.
Reserved
Reference formula or conversion factor shown for context.
Vlan Count
Reference formula or conversion factor shown for context.
Results
usable hosts
Number of usable host IP addresses in the subnet, after reserving the network address and broadcast address.
available IPs
Number of usable host addresses in this subnet. Total addresses minus 2 (network and broadcast).
hosts per VLAN
Sample size or count used in the calculation.
total addresses
The combined total across all inputs and components.