Nodejs Script for DNS Lookup of IoT Cloud Platforms

IoTPlatformLookUp,js

var dns = require('dns');

function getIPAddresses(hostName){
  dns.resolve4(hostName, function (err, addresses) {
    if (err) throw err;
      //console.log('Addresses: ' + JSON.stringify(addresses) );

    addresses.forEach(function (a) {
      dns.reverse(a, function (err, domains) {
        if (err) {
          console.log('Reverse for ' + a +  ' For Hostname: ' + hostName + ' failed: ' +
            err.message);
        } else {
          console.log('Reverse for ' + a +  ' For Hostname: ' + hostName + ': ' +
            JSON.stringify(domains));
        }
      });
    });
  });
}
getIPAddresses('developer.aylanetworks.com');
getIPAddresses('ide.electricimp.com');
getIPAddresses('developer.nest.com');
getIPAddresses('portals.exosite.com');
getIPAddresses('developer.axeda.com');
getIPAddresses('dev.evrythng.com');
getIPAddresses('BUILD.PARTICLE.IO');
getIPAddresses('api.smartthings.com');
getIPAddresses('devs.golgi.io');
getIPAddresses('developer.thingworx.com');