BIN 631 card range

BINs beginning with 631 cover 1,000 card ranges, mostly MAESTRO, issued by 11 banks in 7 countries.

Cards in the 631 range are MAESTRO (97%), DUET (1%), GE CAPITAL (1%). The first digit of a card number identifies the network: 3 is American Express, Diners and JCB, 4 is Visa, 5 is Mastercard, and 6 is Discover and UnionPay.

A BIN is the first 6 to 8 digits of a card number. 631 is the leading three, which identifies the card range — enter the full 6 to 8 digits in the BIN Checker to identify a specific card's issuing bank and country.