
[code] 
<?php
/////////////////////////////////////
// Made by Paul du long           //
// http://www.pauldulong.nl     //
// pauldulong /[at]\ gmail.com //
/////////////////////////////////////


if(isset($_GET['url'])){
	
	$url = $_GET['url'];
	$url = trim($url);
	$url = str_replace("http://www.", "", $url);
	$url = str_replace("/", "", $url);
	$url = str_replace("www.", "", $url);
	$url = str_replace("http:", "", $url);
	
	$result = dns_get_record($url);
	
	if (count($result)) {
		echo 'Domein is bezet ';
	}else{
		echo 'Domein is vrij ';
	}
	
}else{
	echo 'Geen domeinnaam opgegeven';
}

?>
[/code] 