cidr-tools

cidr-tools

Tools to work with IPv4 and IPv6 CIDR network lists

With python3, node and npm available:

$ npm i --save cidr-tools

Example

const cidrTools = require('cidr-tools');

cidrTools.merge(['1.0.0.0/24', '1.0.1.0/24']).then(r => {
  console.log(r);
  //=> ['1.0.0.0/23']
});

cidrTools.exclude(['::1/127'], ['::1/128']).then(r => {
  console.log(r);
  //=> ['::/128']
});

cidrTools.expand(['2001:db8::/126']).then(r => {
  console.log(r);
  //=> ['2001:db8::', '2001:db8::1', '2001:db8::2', '2001:db8::3']
});

API

cidrTools.merge(networks)

• networks String or Array: A list of IPv4 and IPv6 networks.
• Returns: A promise that resolves to an array of merged networks.

cidrTools.exclude(baseNetworks, excludeNetworks)

• baseNetworks String or Array: A list of IPv4 and IPv6 networks.
• excludeNetworks Array: A list of IPv4 and IPv6 networks to exclude from baseNetworks.
• Returns: A promise that resolves to an array of merged remaining networks.

cidrTools.expand(networks)

• networks String or Array: A list of IPv4 and IPv6 networks.
• Returns: A promise that resolves to an array of individual IPs contained in the networks.

© silverwind, distributed under BSD licence.