It is on your side, not on hosting side. If you can see your site using proxy, and if we can see it using proxy and normally it is not issue with your site it is with your browser or your internet service provider (company who providing internet service to you).
Most likely reasons for this:
1. Your browser is caching blank page (try to empty all cache), or something else is wrong with it. Also try other browser.
2. Your firewall, or anti virus program is blocking your site without your knowing. Try to pause, or temporary disable them, if any.
3. Try to visit your site from different device, using different internet connection, diverent ISP (internet service provider)
4. Your ISP is blocking access to your site.
If you go through first 3 points and still you can not see your site, but you can see it from proxy than talk to your ISP.