How do i track the visitor's country and redirect them to appropriate sites?

Question

I want to track the country of the visitors and then redirect them to appropriate subdomains of my site like what google does...

And upto what extent i can rely on the d

Answer 1

If you don't mind downloading, installing and keeping up-to-date an ip database on your server then the solution of Fmark is the best in terms of performances. Otherwise you can use a redirection service like www.redirectbycountry.com