FakecreditcardAbout BIN 521585
BIN 521585 is listed as a Mastercard Standard credit card issued by Bank Ochrony Srodowiska S.A. (Bos S.A.) in Poland. Credit cards spend against a credit line that the cardholder repays later; interchange fees and fraud rules usually differ from debit cards. Standard marks an entry-level consumer product.
Bank Ochrony Srodowiska S.A. (Bos S.A.) has 10 BINs in the dataset, which makes it 26th of 30 banks with a BIN page in Poland. The Bank Ochrony Srodowiska S.A. (Bos S.A.) BIN list shows all of them with network, type and level.
Poland has 1,461 BINs in the dataset; among the 1,288 that name an issuer, the main networks are Visa (54%), Mastercard (39%), Maestro (4%), and 51% are debit. See the Poland BIN list or the Poland card generator.
Mastercard number format for BIN 521585
| Starts with | 521585 (the BIN). First digit 5: banking and financial |
|---|---|
| Length | 16 digits |
| Security code | 3-digit CVC2 on the back |
| Check digit | The last digit, calculated with the Luhn algorithm |
| Printed as | 5215 8543 4747 0585 |
A checkout that receives a number starting with 521585 should detect Mastercard, expect 16 digits and ask for a 3-digit security code. The generator creates as many numbers with this BIN as you need, with expiry dates and CVVs, as CSV, JSON or XML.
Nearby BINs
The BINs closest to 521585 in our data. Neighbouring ranges often belong to the same bank, but not always — each range is assigned separately.
More BINs from Bank Ochrony Srodowiska S.A. (Bos S.A.)
All 10 BINs of Bank Ochrony Srodowiska S.A. (Bos S.A.) →
Frequently asked questions
Which bank issued BIN 521585?
BIN 521585 is registered to Bank Ochrony Srodowiska S.A. (Bos S.A.) in Poland. Bank details can change after mergers or portfolio sales, so confirm with the bank for anything important.
Is 521585 a debit or a credit card BIN?
It is recorded as credit, product level Standard. Credit cards spend against a credit line that the cardholder repays later; interchange fees and fraud rules usually differ from debit cards.
How many digits does a card with BIN 521585 have?
Mastercard card numbers have 16 digits, and the security code is a 3-digit CVC2 on the back. The first six digits are the BIN, the last digit is the Luhn check digit, and the digits in between identify the account.
Can I generate test card numbers with BIN 521585?
Yes. Open the generator with this BIN to create Luhn-valid numbers with expiry dates and CVVs for testing forms, validation and BIN-based rules. They are test data: not issued by Bank Ochrony Srodowiska S.A. (Bos S.A.), linked to no account and declined by real payment systems.
Does a BIN tell me whether a card is valid?
No. A BIN describes a range of card numbers — network, issuer, country and product — not a particular card. Whether a card exists or can be charged is known only to the issuing bank. To check the format of a full number (length and check digit), use the card validator.
A BIN identifies the card network and the issuing institution only. It reveals nothing about an individual card, cardholder or account, and it cannot show whether a card exists or can be charged. Test numbers generated from a BIN are for development and QA only and are declined by every real payment system.
BIN checker · BIN list by country · BIN generator · Free BIN API
BIN data: bin-list-data by Venelin Kochev (a lite version of binlookup.io), licensed under CC BY 4.0. Changes made by Fakecreditcard: issuer, brand and country names re-cased and standardized, spelling variants of the same issuer merged, malformed phone numbers and web addresses removed.