ipcalc

Perform simple operations and calculations on IP addresses and networks.

• Show information about an address or network with a given subnet mask:

ipcalc {{1.2.3.4}} {{255.255.255.0}}

• Show information about an address or network in CIDR notation:

ipcalc {{1.2.3.4}}/{{24}}

• Show the broadcast address of an address or network:

ipcalc -b {{1.2.3.4}}/{{30}}

• Show the network address of provided IP address and netmask:

ipcalc -n {{1.2.3.4}}/{{24}}

• Display geographic information about a given IP address:

ipcalc -g {{1.2.3.4}}