Range Check v1.3.0

This is a simple module to validate IP address, check IP address version, check if IP is within a range.

This started out as range_check but it does much more than just checking ranges but since it's already got a large amount of downloads (37,115 downloads in the last month as of this writing) I'll keep the name the same even though I kinda want to change it to something better.

• Install
• IP Functions
  • Check if IP is valid
  • Check IP version
• Range Functions
  • Check if range is valid
  • Check if IP is within range
• Dependencies

Install

To set up Range Check on your Node.js server use npm.

npm install range_check

IP Functions

Check if IP is valid

var rangeCheck = require('range_check');
console.log(rangeCheck.isIP('10.0.1.5')); //returns true or false

Check IP version

var rangeCheck = require('range_check');
console.log(rangeCheck.ver('10.0.1.5')); //returns 4
console.log(rangeCheck.ver('2001:4860:8006::62')); //returns 6
console.log(rangeCheck.ver('foo')); //returns 0 as invalid IP address

Range Functions

Check if range is valid

You can use isRange if you want to validate an entire range.

var rangeCheck = require('range_check');

console.log(rangeCheck.isRange('2001:db8::/32')); //true
console.log(rangeCheck.isRange('10.0.0.0/8')); // true
console.log(rangeCheck.isRange('qwerty')); // false

Check if IP is within range

var rangeCheck = require('range_check');
console.log(rangeCheck.inRange('10.0.1.5', '10.0.0.0/8')); //returns true

console.log(rangeCheck.inRange('192.0.1.5', '10.0.0.0/8')); //returns false

console.log(rangeCheck.inRange('2001:db8:1234::1', '2001:db8::/32')); //returns true

You can also give a list of ranges

var rangeCheck = require('range_check');
console.log(rangeCheck.inRange('192.168.1.1', ['10.0.0.0/8', '192.0.0.0/8'])); //returns true

Dependencies

• ipaddr.js - https://github.com/whitequark/ipaddr.js