# is-cidr

Check if a string is a valid CIDR

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## Install

```sh
$ npm install --save is-cidr
```

## Usage

```js
import isCidr from 'is-cidr' // default is isCidrV4
import { isCidrV4, isCidrV6 } from 'is-cidr'
// OR
var isCidrV4 = require('is-cidr').isCidrV4
var isCidrV6 = require('is-cidr').isCidrV6

// is a CIDR v4
isCidr('18.101.25.153/24') // true

// is not a CIDR v4
isCidrV4('999.999.999.999/12') // false

// is a CIDR v6
isCidrV6('fe80:0000:0000:0000:0204:61ff:fe9d:f156') // true

// is not a CIDR v6
isCidrV6('fe80:0000:0000:0000:0204:61ff:fe9d:f156/a') // false
```

## API

### isCidr(string)

Check if a string is CIDR IPv4.

### isCidrV4(string)

Check if a string is CIDR IPv4.

### isCidrV6(string)

Check if a string is CIDR IPv6.

## License

MIT © [Felipe Apostol](https://github.com/flipjs)