<?php
$dbhost = "localhost";
$dbuser = "";
$dbpass = "";
$dbname = "";
mysql_connect($dbhost,$dbuser,$dbpass);
mysql_select_db($dbname);
mysql_query('SET NAMES utf8');
$ip = 'ВАШ IP!';
$query = "SELECT country_name FROM ip WHERE INET_ATON('{$ip}') BETWEEN start_ip_num AND end_ip_num LIMIT 1";
$res = mysql_query($query);
$row = mysql_fetch_row($res);
print_r($row);
?>