A tiny xip.io clone quickly written in node.js. Requires module dnsd. Sample site at .addr.eurica.eu.org. Report vulnaribilities if any! :-)

server.js

var dnsd = require('dnsd');

var server = dnsd.createServer(handler);
server.zone('addr.eurica.eu.org', 'eurica.eu.org', 'webmaster@eurica.eu.org', 'now', '2h', '30m', '2w', '10m');
server.listen(5354);
console.log("Server running at " + server.ip + ":" + server.port);

function handler(req, res) {
	var question = res.question[0];
	var hostname = question.name;
	//var ttl = Math.floor(Math.random() * 3600);
	var ttl = 10;

	console.log(question);
	console.log('%s:%s/%s %j', req.connection.remoteAddress, req.connection.remotePort, req.connection.type, req);

	var hostnames = hostname.split(".");
	var ip = [];
	for (var i = 0; i < hostnames.length; i++) {
		if (parseInt(hostnames[i], 10) == hostnames[i]) {
			ip.push(parseInt(hostnames[i]));
		}
	}
	if (ip.length >= 4) {
		ip = ip[0] + "." + ip[1] + "." + ip[2] + "." + ip[3];
	}
	else {
		ip = "127.0.0.1";
	}

	res.answer.push({
		name: hostname, 
		type: 'A',
		data: ip,
		ttl: ttl
	});
	res.end();
}