How to know your Proxy/Site is blocked?

Just go to

http://sitereview.bluecoat.com/sitereview.jsp

and type your website/proxy and click on submit button

You get something like this…

The page you want reviewed is http://www.a1001.co.nr/ (Check another site)
This page is currently categorized as Proxy Avoidance
Last Time Rated/Reviewed: > 7 days

For one of my sites www.a1001.co.nr I got it as Proxy avoidance which means it has been actaully blocked by the same way you can check out for anywebsite to see if your site is blocked or not (Gaming sites etc.,)