Yeah, Im getting this issue as well. No matter what browser I use to try to access it, I can't connect to it almost as though i have no internet connection, yet I clearly do as I have no problems whatsoever accessing any other internet web page.
I just don't understand it at all. And I cant contact blizzard because I cant access their internet page to be able to contact them <.>
Lose/lose situation =/
*located in the UK if that makes any difference