Common cards: 955550, 622580, 622588, 621483; for a card with a 16-digit card number, the card level can be determined based on the first 6 digits of the card number.
Judge the card type based on the beginning of the China Merchants Bank card number:
1. Regular cards: 955550, 622580, 622588, 621483 (IC card or M+ card);
2. Gold Card: 622609 (UnionPay), 468203 (VISA International Debit Card), 512425 (MasterCard International Debit Card), 621485 (IC Card);
3. Golden Sunflower Card (VIP VIP Card) ): 621286 (UnionPay), 410062 (VISA international debit card), 524011 (MasterCard international debit card), 621486 (UnionPay IC card).
4. Diamond IC card: 623126 (UnionPay), private bank IC card: 623136 (UnionPay).