IP Calculator

ipcalc takes an IP address and netmask and calculates the resulting broadcast, network, Cisco wildcard mask, and host range.

Calculate IPs from a subnet:


Subnet Slicing:

Thanks to CIDR, we can finely slice and dice A, B, or C networks into multiple subnets, and ipcalc makes subnetting easy. Suppose you want to make two Class B subnets; just tell ipcalc the network segment you want to divide and how many hosts in each segment. In this example we want 15 hosts in each subnet:

ipcalc -s 15 15

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