Help opening a url using the Cuhead WiFi shield v2

Then you should be able to access your site using client code. Use the ip address of the server (ifastnet.com) to connect, then put a "Host: mydomain.com" parameter in the request header. Here is the wifi shield example I use:

client.println("GET /mypage.php HTTP/1.1");
client.println("Host: mydomain.com");
client.println("Connection: close\r\n");

edit: Actually, if you have your domain name registered correctly, it should resolve to the ifastnet server anyway.