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TL;DR

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

This document was created using the contents of the tldr project.