What is “subnetcalc” Package?

IPv4/IPv6 subnet calculator
For more details: https://www.uni-due.de/~be0001/subnetcalc/

Installation

• Open Terminal by pressing command+space then type terminal and hit Enter key.
• Install homebrew first.

  ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)" < /dev/null 2> /dev/null

• Install subnetcalc.

  brew install subnetcalc

Now, use subnetcalc!