PNG  IHDR;IDATxܻn0K )(pA 7LeG{ §㻢|ذaÆ 6lذaÆ 6lذaÆ 6lom$^yذag5bÆ 6lذaÆ 6lذa{ 6lذaÆ `}HFkm,mӪôô! x|'ܢ˟;E:9&ᶒ}{v]n&6 h_tڠ͵-ҫZ;Z$.Pkž)!o>}leQfJTu іچ\X=8Rن4`Vwl>nG^is"ms$ui?wbs[m6K4O.4%/bC%t Mז -lG6mrz2s%9s@-k9=)kB5\+͂Zsٲ Rn~GRC wIcIn7jJhۛNCS|j08yiHKֶۛkɈ+;SzL/F*\Ԕ#"5m2[S=gnaPeғL lذaÆ 6l^ḵaÆ 6lذaÆ 6lذa; _ذaÆ 6lذaÆ 6lذaÆ RIENDB` # is-ip [![Build Status](https://travis-ci.org/sindresorhus/is-ip.svg?branch=master)](https://travis-ci.org/sindresorhus/is-ip) > Check if a string is an IP address ## Install ``` $ npm install is-ip ``` ## Usage ```js const isIp = require('is-ip'); isIp('192.168.0.1'); //=> true isIp('1:2:3:4:5:6:7:8'); //=> true isIp.v4('1:2:3:4:5:6:7:8'); //=> false ``` ## API ### isIp(string) Check if `string` is IPv4 or IPv6. ### isIp.v4(string) Check if `string` is IPv4. ### isIp.v6(string) Check if `string` is IPv6. ### isIp.version(string) Returns `6` if `string` is IPv6, `4` if `string` is IPv4, or `undefined` if `string` is neither. ```js isIp.version('192.168.0.1'); //=> 4 isIp.version('1:2:3:4:5:6:7:8'); //=> 6 isIp.version('abc'); //=> undefined ``` ## Related - [ip-regex](https://github.com/sindresorhus/ip-regex) - Regular expression for matching IP addresses - [is-cidr](https://github.com/silverwind/is-cidr) - Check if a string is an IP address in CIDR notation - [cidr-regex](https://github.com/silverwind/cidr-regex) - Regular expression for matching IP addresses in CIDR notation ## License MIT © [Sindre Sorhus](https://sindresorhus.com)