BIN 521921
5219 2149 7868 5330
BIN 521921 is the Issuer Identification Number (IIN) at the start of a card number. It is issued on the Mastercard network as a credit card at the Mixed Product level. The issuing bank is Sumitomo Mitsui Card Company, Ltd., based in Japan. A BIN identifies the bank and card range only — it never reveals an account number, balance or cardholder.
Other BINs from Sumitomo Mitsui Card Company, Ltd.
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Enter any card's first 6–8 digits to look up its bank, scheme, type and country.
Open BIN Lookup →Frequently asked questions
What bank issued BIN 521921?
BIN 521921 belongs to Sumitomo Mitsui Card Company, Ltd. in Japan. A BIN identifies the issuing bank and card range — never an individual account or cardholder.
Is BIN 521921 a credit or debit card?
It is a credit card on the Mastercard network.
Can I get full card numbers from a BIN?
No. A BIN is only the first 6–8 digits and public routing information. It reveals the scheme, type, bank and country, but never a full card number, balance or cardholder. The sample on this page is randomly generated and holds no funds.