So a single specific website - us.blizzard.com - won't load at all for me. It just hangs up and times out.
I've confirmed via downforeveryoneorjustme.com that the issue is on my end.
I've tried it in multiple browsers, both IE and Firefox, so it's not a browser issue.
I've tried it from two different computers in the house, so it's not a computer-specific issue.
This means it is probably a router problem, but I don't know what the next step is to isolate and/or fix it.