FakecreditcardAbout BIN 521025
BIN 521025 is listed as a Mastercard debit card issued by Santander Bank Polska in Poland. Debit cards draw money directly from the cardholder's bank account, so checkouts and gateways often treat them differently from credit cards (fees, holds, recurring billing).
Santander Bank Polska has 102 BINs in the dataset, which makes it the second-largest of 30 banks with a BIN page in Poland. The Santander Bank Polska 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 521025
| Starts with | 521025 (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 | 5210 2579 7996 5903 |
A checkout that receives a number starting with 521025 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 521025 in our data. Neighbouring ranges often belong to the same bank, but not always — each range is assigned separately.
More BINs from Santander Bank Polska
All 102 BINs of Santander Bank Polska →
Frequently asked questions
Which bank issued BIN 521025?
BIN 521025 is registered to Santander Bank Polska in Poland. The dataset lists the website www.santander.pl. Bank details can change after mergers or portfolio sales, so confirm with the bank for anything important.
Is 521025 a debit or a credit card BIN?
It is recorded as debit. Debit cards draw money directly from the cardholder's bank account, so checkouts and gateways often treat them differently from credit cards (fees, holds, recurring billing).
How many digits does a card with BIN 521025 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 521025?
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 Santander Bank Polska, 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.
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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.