Join Date: Jul 2007
Location: San Francisco/Sydney
Programs: UA 1K/MM, Hilton Diamond, Marriott Something, IHG Gold, Hertz PC, Avis PC
Posts: 8,162
Can't speak for OneWorld, but Star Alliance publish a small booklet (used to be a physical book, I think it's just PDF now) that contains all of the valid/current *A cards. It's updated whenever there's a change to any of the airlines cards.
A current copy of this book is supposed to be available at the lounge, so that they can confirm a card is valid in case there's any doubt.