Wow...I feel a bit dumb for not seeing that. Thank you guys for your super speedy response! I was trying to convert in the other direction and wasn't getting any results. Can't believe I didn't just plug the "code" number into the converter. So while we are here, I'll ask another question. Seems to me there is only 1,000,000 possibilities of keys by only using this method. Could it be that the company does not produce no more than one million keys? Including the leading 0 now there are only 100,000 or looking the other direction a max of FFFF or 65535. Seems like duplicate code numbers could be achieved.