The last news I've heard about it was back in 2009, https://github.com/blog/493-github-is-moving-to-rackspace https://github.com/blog/493-github-is-moving-to-ra

The last news I've heard about it was back in 2009, https://github.com/blog/493-github-is-moving-to-rackspace https://github.com/blog/493-github-is-moving-to-rackspace. But I've also heard that they have some infrastructure on site (clearly not what they were talking about).