Código PHP:
<?
$whoisserver = "whois.verisign-grs.net";
$domain = "forosdelweb";
$comarray = array( $domain.".com" );
$comcount = count( $comarray );
$i = 0;
for ( $i=0; $i<$comcount; $i++ ) {
$domname = $comarray[ $i ];
$result = "";
$ns = fsockopen( $whoisserver, 43 );
fputs( $ns, "$domname\r\n" );
while( !feof( $ns ) )
$result .= fgets( $ns, 128 );
fclose( $ns );
echo "$result";
}
?>