<FORM action=ip.php method=post>
         <INPUT type=text name=ip size= 35 >
         <input type=submit value=жми>
       </form>
<?php
  if ($ip!="") {
    $sock = fsockopen ("whois.ripe.net", 43 ,$errno,$errstr);
      
    if (!$sock) {
      echo("$errno($errstr)");
      return;
    }
    else {
      fputs ($sock, $ip."\r\n");
   
      while (!feof($sock)) {
        echo (str_replace(":",":      ",fgets ($sock, 128 ))."<br>");
     
      }
    }
    fclose ($sock);
    }
?>

echo getenv ("REMOTE_ADDR");