The site is down again? What's wrong with that site? A while back when I wanted to look something up in the x86_64 ABI the site was down too, for at least a wee

The site is down again? What's wrong with that site? A while back when I wanted to look something up in the x86_64 ABI the site was down too, for at least a week (I eventually gave up checking). At some point later it came back. I wonder how long it's been down this time. Interestingly, Xcode's OS X docs used to link to x86-64.org for the AMD64 ABI, but looking right now, the link is removed (but the text remains), I guess because the site was down for so long.