What is “sipcalc” Package?

Advanced console-based IP subnet calculator
For more details: http://www.routemeister.net/projects/sipcalc/

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 sipcalc.

  brew install sipcalc

Now, use sipcalc!