ipcalc

Perform simple operations and calculations on IP addresses and networks. More information: https://manned.org/ipcalc.

• 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