# ipaddr.js — an IPv6 and IPv4 address manipulation library [](https://travis-ci.org/whitequark/ipaddr.js)

ipaddr.js is a small (1.9K minified and gzipped) library for manipulating
IP addresses in JavaScript environments. It runs on both CommonJS runtimes
(e.g. [nodejs]) and in a web browser.

ipaddr.js allows you to verify and parse string representation of an IP
address, match it against a CIDR range or range list, determine if it falls

(function(){var r,t,n,e,i,o,a,s;t={},s=this,"undefined"!=typeof module&&null!==module&&module.exports?module.exports=t:s.ipaddr=t,a=function(r,t,n,e){var i,o;if(r.length!==t.length)throw new Error("ipaddr: cannot match CIDR for objects with different lengths");for(i=0;e>0;){if((o=n-e)<0&&(o=0),r[i]>>o!=t[i]>>o)return!1;e-=n,i+=1}return!0},t.subnetMatch=function(r,t,n){var e,i,o,a,s;null==n&&(n="unicast");for(o in t)for(!(a=t[o])[0]||a[0]instanceof Array||(a=[a]),e=0,i=a.length;e<i;e++)if(s=a[e],r.kind()===s

{
"name": "ipaddr.js",
"description": "A library for manipulating IPv4 and IPv6 addresses in JavaScript.",
"version": "1.9.1",
"author": "whitequark <whitequark@whitequark.org>",
"directories": {
"lib": "./lib"
},