Supplementary information:
The bank card number refers to the number code on the hard card issued by each bank, and the business number segment of each commercial bank has uniform provisions. The first six digits of the card number represent the identification code of the issuing bank, also called the BIN number, and different BIN numbers represent different bank card organizations and card levels.
for example: 62276(BIN): Bank of China BOC is a card, 49666(BIN): Bank of China BOC series VISA standard card ordinary card /VISA university recognition card, 43888(BIN): China Bank Air China bosom friend credit card, 622752(BIN): China Bank Shanghai Branch Great Wall RMB debit card ordinary card, 4272(BIN): China Industrial and Commercial Bank VISA Student International Credit Card, 4273(BIN): China Industrial and Commercial Bank VISA International Credit Card Gold Card, 62223(BIN): China Industrial and Commercial Bank New RMB Credit Card Puka, 622235(BIN): China Industrial and Commercial Bank New RMB Credit Card Gold Card, 62221(BIN): China Industrial and Commercial Bank New Credit Card. 622215(BIN): China Industrial and Commercial Bank's new credit card (quasi-loan) gold card, 6222(BIN): China Industrial and Commercial Bank's Peony Link debit card, 436742(BIN): China Construction Bank's VISA Dragon Card, 436745(BIN): China Construction Bank's VISA Dragon Card, 6228 (Bin): China. 458123(BIN): Bank of Communications VISA Card, 521899(BIN): Bank of Communications MC Credit Card, 62226(BIN): Bank of Communications Pacific Card Debit Card, 42674(BIN): Bank of Shanghai VISA Gold Card, 622892(BIN): Bank of Shanghai Debit Card, 622188(BIN). 62969(BIN): Bank of Beijing Jingka Debit Card, 52152(BIN): Guangdong Development Bank Southern Airlines Pearl Card MC Gold Card, 52382(BIN): Guangdong Development Bank Southern Airlines Pearl Card MC Puka, 911121(BIN): Guangdong Development Bank Licaitong Debit Card, 44739(BIN): Shanghai Pudong Development Bank VISA Gold Card, 449. 435745(BIN): Shenzhen Development Co-branded Gold Card, 99881(BIN): Shenzhen Development Bank, 622538(BIN): Shenzhen Development Bank Development Card Debit Card, 46254(BIN): China Everbright Bank.