Postcard US-5112332

Hi,
I received a postcard with the ID US-511332.
I can't register this card. Looking up i found that a card with this number was send under your name.
The person who sent me the card is living in the area of Chicago.
Well it can happen some times. It does not bother me. I thought you like to know that your ID was taken by mistake. Maybe the person to whom you sent the card can't register the card.
Anyway, warm greetings from the Caribbean.
Mathew