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# ip-regex [](https://travis-ci.org/sindresorhus/ip-regex)
> Regular expression for matching IP addresses
## Install
```sh
$ npm install --save ip-regex
```
## Usage
```js
var ipRegex = require('ip-regex');
// contains an IP address
ipRegex().test('unicorn 192.168.0.1');
//=> true
// is an IP address
ipRegex({exact: true}).test('unicorn 192.168.0.1');
//=> false
ipRegex.v6({exact: true}).test('1:2:3:4:5:6:7:8');
//=> true
'unicorn 192.168.0.1 cake 1:2:3:4:5:6:7:8 rainbow'.match(ipRegex());
//=> ['192.168.0.1', '1:2:3:4:5:6:7:8']
```
## API
### ipRegex(options)
Returns a regex for matching both IPv4 and IPv6.
### ipRegex.v4(options)
Returns a regex for matching IPv4.
### ipRegex.v6(options)
Returns a regex for matching IPv6.
#### options.exact
Type: `boolean`
Default: `false` *(Matches any IP address in a string)*
Only match an exact string.
Useful with `RegExp#test` to check if a string is an IP address.
## License
MIT © [Sindre Sorhus](http://sindresorhus.com)