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Netmask6

Parsing IPv4 and IPv6 netmasks.

Install:

npm install netmask6

Usage

const { Netmask } = require("netmask6");

const nm = Netmask.v4.parse("10.1.2.3/24");
nm.size // 256n
nm1.firstIP.toString() // 10.1.2.0
nm2.lastIP.toString()  // 10.1.2.255