If you want to check the status of your application all you have to do is try to put another application in.
You will get the following error if your application is still pending or if you were whitelisted: "LOOKS LIKE YOU'VE ALREADY APPLIED FOR THIS SERVER. CHECK YOUR EMAIL PERIODICALLY TO SEE IF YOU'VE BEEN WHITELISTED."
Remember to check your email for denials and approvals. Sometimes these can be picked up by the spam filter as well.