There are multiple repositories in existence, and more to come:
xdd.killercool.com (formerly xdd.org).
This is the first web site published back in 2012. At one time, google had 140 million of these fake identities in its search space. This was upsetting the "research someone today for a monthy fee" and the fake information was getting into the name colletor sites.

xdd2.com
This site came up in late 2012, and had the second set of US data.

xdd3.org
A third set launched in 2013, at the same time as the UK sites.

xdduk.org
The United Kingdom version of fake names.