My source is the Hackaday post at http://hackaday.com/2014/04/08/dirt-cheap-dirty-boards-offer..., which says:

[Ian] at Dangerous Prototypes has just announced Dirt Cheap Dirty Boards, a PCB fabrication service for times where quality doesn’t matter too much.

There's "© 2014 Where Labs, LLC" at the bottom of dirtypcbs.com page.

http://www.wherelabs.com/