test.js

test.js

var dns = require('dns');

function reverseLookup(ip, cb) {	

	dns.reverse(ip, function(err,domains){
		if(err!=null)	callback(err);
		cb(domains)
	});


}

reverseLookup('213.46.228.196', (data) =>{
	
	var domains = data[0];

	console.log(domains);
});