BIN 521585
BANK OCHRONY SRODOWISKA S.A. (BOS S.A.) • POLAND • MASTERCARD
About BIN 521585
BIN 521585 is a MASTERCARD credit card operating on the STANDARD payment network, issued by BANK OCHRONY SRODOWISKA S.A. (BOS S.A.) in POLAND (PL). The default settlement currency for this card is Unknown. This is not a prepaid card — it is linked to a standard bank account or credit facility. Card numbers beginning with this BIN pass the Luhn algorithm validation, confirming they are structurally valid card numbers.
Frequently Asked Questions
What is BIN 521585?
A Bank Identification Number (BIN), also called an Issuer Identification Number (IIN), is the first 6–8 digits of a payment card. BIN 521585 identifies BANK OCHRONY SRODOWISKA S.A. (BOS S.A.) as the issuing institution for cards carrying this prefix. These digits tell payment processors which bank issued the card before the full transaction is initiated.
Which bank issued BIN 521585?
BIN 521585 was issued by BANK OCHRONY SRODOWISKA S.A. (BOS S.A.), a financial institution operating in POLAND.
In which country is BIN 521585 registered?
BIN 521585 is registered in POLAND (country code: PL). The issuing bank, BANK OCHRONY SRODOWISKA S.A. (BOS S.A.), holds the licence to issue cards under this BIN range in POLAND. Transactions on these cards typically involve POLAND-based banking and settlement infrastructure.
Is BIN 521585 a credit, debit, or prepaid card?
BIN 521585 belongs to the credit card category. This is not a prepaid card, so it is linked to a standard bank account or approved credit facility.
What payment network does BIN 521585 use?
BIN 521585 operates on the MASTERCARD payment network using the STANDARD card scheme. This means all transactions made with cards carrying this BIN are routed and processed through MASTERCARD's global payment infrastructure.
What currency is associated with BIN 521585?
The primary currency associated with BIN 521585 is Unknown. This is the currency in which domestic transactions are typically billed for cards under this BIN range when used in POLAND. International transactions may involve currency conversion depending on the merchant's country.
Does BIN 521585 pass the Luhn check?
Yes — card numbers beginning with BIN 521585 pass the Luhn algorithm. The Luhn algorithm is a standard checksum formula used by payment systems to detect miskeyed or structurally invalid card numbers. A passing result confirms the number range is mathematically valid.
