Someone on github mentioned that these are needed though not installed automatically with Julia: make, gcc, g++, gfortran, perl and wget. In my case I was missing gfortran and libncurses5-dev.
Not for me. If you need it, the IP address I get is 207.97.227.245, the same as for other GitHub Pages sites.
But I see how having just the IP address isn't going to help you, since it doesn't distinguish between GitHub Pages. XD Maybe you could temporarily add julialang.github.com to your hosts file or something.
The site at http://julialang.github.com/ 301-redirects to http://julialang.org/. I did mention julialang.github.com above, but I was reluctant to linkify it since it probably wasn't going to help on its own. :-p
Come to think of it, adding a hosts file entry for julialang.github.com probably won't help. Adding one for julialang.org might work though. (If I keep changing my mind, I'll be right sooner or later!)
