For future reference, regarding aircraft identification numbers. Each country generally has a unique letter(s) identifier for its aircraft registration number, which have to be visible on the aircraft (planes, jets, balloons, all of 'em). The U.S. prefix is "N". There is a registry which I believe can be accessed online through the Federal Aviation Administration, that is maintained in Oklahoma City, and it will provide you with aircraft type, model, ownership name and address.
I've never had reason to check, but it all likelihood other countries have a similarly accessible registry of such information online.