Patrick wrote: >> Hi Everyone >> >> Could anyone give me some advice on the best way to do IP to >> geo-location with php using open source code? >> >> Thanks in advance-Patrick That is not an easy problem. You can go to ARIN, APNIC, etc and get /8 and smaller assignments. But, if the new assignee hasn't SWIP'd their blocks, the world will think the old assignment is still true. Recently a block was assigned to a US company and their customers couldn't access hulu.com because there hadn't been a SWIP. hulu denied access because the block is still in the whois records as non-US. The big geolocation companies make a lot of mistakes. Because - they will not use a fine enough granularity to sort out where an ip connection is coming from. They'll usually stop at the last router within a large transit provider's block. For example: many local ISPs in northern california will all appear to be in stockton, etc. where some tier 1 routers are. For dynamic ip ranges it is even messier. For now, ip geolocation is very fuzzy. Much better to go by zip code or postal code. At least when zip areas are merged or changed you might get sufficient advance notice. -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
