FakecreditcardAbout BIN 504303
In our BIN data, 504303 is a Maestro debit card range that belongs to Banco Comercial Portugues, S.A., registered in Portugal. 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).
With 81 BINs, Banco Comercial Portugues, S.A. ranks the largest among the 14 banks we list for Portugal. The Banco Comercial Portugues, S.A. BIN list shows all of them with network, type and level.
Across Portugal, the dataset counts 643 BINs; among the 523 that name an issuer, the main networks are Visa (64%), Mastercard (22%), American Express (7%), and 36% are debit. See the Portugal BIN list.
Maestro number format for BIN 504303
| Starts with | 504303 (the BIN). First digit 5: banking and financial |
|---|---|
| Length | 12 to 19 digits |
| Security code | 3-digit code (not on every card) |
| Check digit | The last digit, calculated with the Luhn algorithm |
| Printed as | 5043 0328 4157 9619 |
When you test with this BIN, check that your form shows the Maestro logo, groups the 16 digits correctly and rejects numbers whose check digit is wrong. The generator creates as many numbers with this BIN as you need, with expiry dates and CVVs, as CSV, JSON or XML.
Nearby BINs
BINs just below and above 504303. Banks often hold consecutive ranges, so neighbours can be sister products of the same issuer.
More BINs from Banco Comercial Portugues, S.A.
All 81 BINs of Banco Comercial Portugues, S.A. →
Frequently asked questions
Which bank issued BIN 504303?
BIN 504303 is registered to Banco Comercial Portugues, S.A. in Portugal. Bank details can change after mergers or portfolio sales, so confirm with the bank for anything important.
Is 504303 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 504303 have?
Maestro card numbers have 12 to 19 digits, and the security code is a 3-digit code (not on every card). 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 504303?
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 Banco Comercial Portugues, 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.