Originally Posted by Stefan0521
The first two digits of the number are always 37 or 34 for amex, the next two digits indicate country and type (credit/charge). I. e. it's 42 for UK and 50 for German charge cards. As we mentioned before, obviously it's 17 for US charge cards. The two digits after that are the product type of the card. 88 for most European Centurions, 84 for Platinum and Gold Cards.
the next 2 digits after 37 in singapore is 62 for both credit and charge cards through all levels - green/blue, gold and platinum