I did too, and since he was from Ireland I thought it was a European thing.... Evidently it is some kind of club where just about anyone can register just about any kind of dog without any kind of documentation!
I asked the same question when I got my first Yorkie, and no one on YT seemed to be familiar with it. I concluded that it was a useless registration. As much as I love my little boy, he is not even close to the Yorkie standard...
Universal Kennel Club International