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Editing: readme.md (1.17 KB)

# ip-regex [![Build Status](https://travis-ci.org/sindresorhus/ip-regex.svg?branch=master)](https://travis-ci.org/sindresorhus/ip-regex)

> Regular expression for matching IP addresses


## Install

```
$ npm install --save ip-regex
```


## Usage

```js
const 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`<br>
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.


## Related

- [is-ip](https://github.com/sindresorhus/is-ip) - Check if a string is an IP address


## License

MIT © [Sindre Sorhus](https://sindresorhus.com)