Description:
------------
In agreement with the RFC 1918 document (page 4, item 3), the Internet Assigned Numbers Authority (IANA) has reserved the following three blocks of the IP address space for private internets:

10.0.0.0    - 10.255.255.255  (10/8 prefix)
172.16.0.0  - 172.31.255.255  (172.16/12 prefix)
192.168.0.0 - 192.168.255.255 (192.168/16 prefix)

Ok, until there it's good. :)

Main problem: The www.php.net/source.php?url=/include/ip-to-country.inc include file used here has a wrong regular expression. The RegExp used doesn't ignore 172.17.0.0-172.31.255.255 IP block, that they're private.

Other problem: As well told smith99 on ip-to-country.com forums (topic: http://ip-to-country.webhosting.info/node/view/43), the RegExp also doesn't ignore Unknown values of some proxies.

Reproduce code:
---------------
Line 207-210:

           // Skip RFC 1918 IP's 10.0.0.0/8, 172.16.0.0/12 and
           // 192.168.0.0/16 -- jim kill me later with my regexp pattern
           // below.
           if (!eregi ("^(10|172\.16|192\.168)\.", $ips[$i])) {

Expected result:
----------------
Also ignore 172.17.0.0-172.31.255.255 IP block and Unknown values, with something as this code:

           // Skip RFC 1918 IP's 10.x.x.x/8, 172.16-31.x.x/12 and
           // 192.168.x.x/16 -- jim kill me later with my regexp pattern
           // below.
           if (!preg_match("/^(unknown|10|172\.(1[6-9]|2[0-9]|3[0-1])|192\.168)\.*/", $ips[$i])) {

Actual result:
--------------
172.17.0.0-172.31.255.255 IP block and Unknown values doesn't ignored.