Useage

import * as netTools from "https://deno.land/x/cidr/mod.js"

import { isCIDRv4, isIP, isIPv4, isIPv4InCIDR } from "https://deno.land/x/cidr/mod.js"

// isIP returns `number`. It will return `0` if params isn't v4 or v6
isIP('::1') // returns 6
isIP('127.0.0.1') // returns 4
isIP('127.000.000.001') // returns 0

isCIDRv4("192.168.50.1/16") // true
isCIDRv4("192.168.50.1") // false

isIPv4InCIDR('192.168.50.1/16', '192.168.50.12') // true