PHP 5.2+ offer an excellent function for validating IP Addresses: filter_var().
The filter_var() function offers several flags: FILTER_VALIDATE_IP, FILTER_FLAG_IPV4, FILTER_FLAG_IPV6, FILTER_FLAG_NO_PRIV_RANGE and FILTER_FLAG_NO_RES_RANGE, used to filter or validate IP addresses based on whether the address is IPv4, IPv6 or within a reserved or private network range.
Country IP Blocks has introduced Access Control Lists by Continent to allow additional options for network managers and webmasters.
Our Continent Access Control Lists are located on our continents page.
Listed continents include Africa, Antartica, Asia, Europe, North America, Oceania and South America.
A complete list of countries by continent is available here.
The country of Viet Nam has moved from number six to number two on the Country IP Blocks list of global spammers. The rise in spam from Viet Nam has risen so dramatically during the past quarter that China could soon move from its top spot to second place.
The list of the Top Ten Global Spammers has shifted during the third quarter of 2009. An increase in spam of 41% since June 1, 2009 has also brought with it a significant change in the geographical locations of the spammers. Read more…
Breaking News: We are pleased to announce that you may now select your Country IP Blocks by continent as well as by country.
We have received many requests from Network Managers and Webmasters for additional features on our Access Control Lists. One of the most requested feature is the ability to consolidate our Country IP lists by continent. Read more…