You can do something like this – Add a US CIDR IP address block of code that only allows US IP addresses to view/access your site: http://forum.ait-pro.com/forums/topic/preventing-countries-from-accessing-site/#post-22206 if you only want to allow visitors from the US. Since you have a VPS, Dedicated or in-house server it would be better to add this US CIDR IP address block of code in your server’s httpd.conf file or vhost file.
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