CIDR Range Calculator

ipcalc is a CIDR range calculator.

Installation

You must have Go installed and $GOPATH/bin must be in your path. For example: export PATH=$PATH:$(go env GOPATH)/bin

Download and install the ipcalc binary

go install github.com/andy-trimble/ipcalc@latest

Usage

> ipcalc 10.1.0.0/24
CIDR Range: 10.1.0.0/24
Netmask:    255.255.255.0
First IP:   10.1.0.0
Last IP:    10.1.0.255
Addresses:  256

> echo "10.1.0.0/24" | ipcalc
CIDR Range: 10.1.0.0/24
Netmask:    255.255.255.0
First IP:   10.1.0.0
Last IP:    10.1.0.255
Addresses:  256