DNS Lookup from NodeJS

dns_lookup_nodejs.js

/* npm install dns */
var dns = require('dns');

/* domain name to lookup */
domain_name = 'example.com';


dns.lookup(domain_name, function(err, addresses, family){
  /* handle if look up fails inside if condition */
	if(err){return console.log(err.stack);}
	
	 /* handle a successful lookup */
	console.log(addresses);
	console.log(family);
});