ipop

IP subnet calculator

  • ipop

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ipop
000.0.110 years ago10 years agoMinified + gzip package size for ipop in KB

Readme

ipop
IP subnet calculator. One can also use it to check if IP is in subnet.

Install

npm install ipop

Usage

Example

var ipop = require('ipop');

// check if IP in subnet
console.log(ipop.ip4incidr('192.168.1.15', '192.168.0.1/24'));
console.log(ipop.ip4incidr('192.168.1.15', '192.168.0.1/16'));
console.log(ipop.ip4incidr('192.168.1.15', '192.168.1.15/32'));

// show subnet info
console.log(ipop.cidr4('87.239.88.1/22'));

Output:
false
true
true
{ net: '87.239.88.0',
  netmask: '255.255.252.0',
  broadcast: '87.239.91.255',
  low: '87.239.88.1',
  high: '87.239.91.254',
  hosts: 1022 }

Documentation

ip4incidr(ip, cidr)

check if ip is in given cidr. Returns boolean. cidr has to be in format X.X.X.X/X.

cidr4(cidr)

cidr4 returns object with info about given cidr:
- net: network address - netmask: network mask - broadcast: broadcast address - low: first usable host address - high: last usable host address - hosts: number of usable hosts