https://github.com/brh55/min-prefix-length

:1234: Calculate the minimum prefix length for an IPv4 subnet based on a desired number of host
https://github.com/brh55/min-prefix-length

ipv4 networking subnet

Last synced: 30 days ago
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:1234: Calculate the minimum prefix length for an IPv4 subnet based on a desired number of host

• Host: GitHub
• URL: https://github.com/brh55/min-prefix-length
• Owner: brh55
• License: mit
• Created: 2017-01-27T18:55:07.000Z (almost 8 years ago)
• Default Branch: master
• Last Pushed: 2017-02-02T00:00:16.000Z (almost 8 years ago)
• Last Synced: 2024-08-08T22:36:50.742Z (3 months ago)
• Topics: ipv4, networking, subnet
• Language: JavaScript
• Homepage:
• Size: 36.1 KB
• Stars: 0
• Watchers: 2
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: readme.md
  • License: license

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README

        
# min-prefix-length [![Build Status](https://img.shields.io/travis/brh55/min-prefix-length.svg?style=flat-square)](https://travis-ci.org/brh55/min-prefix-length) [![XO code style](https://img.shields.io/badge/code_style-XO-5ed9c7.svg?style=flat-square)](https://github.com/sindresorhus/xo)

> Calculate the minimum prefix length for an IPv4 subnet based on a desired number of host accounting for broadcast and network addresses

>

> **minPrefixLength(8) => 28**

## Install

```

$ npm install --save min-prefix-length

```

## Usage

```js

const minPrefixLength = require('min-prefix-length');

const prefix = minPrefixLength(28);

const CIDR = `192.168.1.0/${prefix}`

console.log(CIDR)

// => "192.168.1.0/28"

```

## API

### minPrefixLength(n)

Returns the minimum prefix length needed to support *n* of hosts accounting for the network and broadcast address

#### n | ``

*n* number of desired hosts

## Related

[min-host-bits](https://github.com/brh55/min-host-bits) - :computer: Calculate minimum host bits needed for desired number of hosts

[ip-class](https://github.com/brh55/ip-class) - :capital_abcd: Return the classful network class (A, B, C, D, E) of an IPv4 address

## License

MIT © [Brandon Him](https://github.com/brh55)