Just found this reference:
http://www.nopuppymills.com/index.php?page=registries
I remember now that it used to be the U.S. Kennel Club, but I had forgotten.
...and this:
Dog Registry of America (DRA) — (Formerly the US Kennel Club) Statements directly from the Registry's home page: "DRA Registers rare breeds and exotic breeds. DRA Registers 'Unrecognized Breeds'" "DRA registers poodle crosses such as cocker-poos, peke-a-poo's as a separate class DRA takes the red tape out of registration." "Tired of registration & documentation hassles? Starting your own blood line? Lost or never had papers? Developing new breeds? Breed not recognized? DRA Registers all purebred dogs."
http://www.canadasguidetodogs.com/breedregistries.htm