BIN 540866 Mastercard credit card · Liberbank, S.A. · 🇪🇸 Spain

Prefix 540866 identifies Mastercard cards issued by Liberbank, S.A. (standard credit card). Issuing country: 🇪🇸 Spain.

✓ Runs locally💳 MastercardCredit🇪🇸 Spain
What BIN 540866 identifies
Issuing bankLiberbank, S.A.
NetworkMastercard
Card typeCredit
Card levelStandard
Issuing country🇪🇸 Spain
Prefix length6 digits

A prefix identifies the issuer and the network, nothing else: not the cardholder, not the balance, not whether the card is valid. A bank runs hundreds of them, and a prefix can be reassigned after a portfolio is closed. The details below are computed in your browser: the full number is never sent, and only its first three digits appear in the URL of the reference-data slice being downloaded.

Other prefixes from Liberbank, S.A.

407242411173423847428284432051432813439356450871455245455253459976459977

All prefixes from Liberbank, S.A. · All issuers in this country

Examples:
MASTERCARDBIN 540866🇪🇸 Spain

🔒 Network and Luhn check computed locally; the issuer is read from a static file. Paypedia never receives or stores any card number.

Anatomy of a card number. MII, BIN, account number, and Luhn check digit.

The BIN (Bank Identification Number), officially called the IIN (Issuer Identification Number), is the first few digits of a card number. They identify the network and the issuer, which lets the merchant route the transaction and apply the right fees.

4MIIIssuer industry (4 = banking/finance)
53904Rest of the BINTogether: 6 to 8 digits that identify the issuer
123456789Account numberAssigned by the issuing bank
8Luhn check digitMod 10 check across the whole number
⚠️
BIN-8 migration: historically 6 digits long, BINs are moving to 8 digits at Visa and Mastercard to ease the shortage of ranges. A single 6-digit prefix can now cover several issuers, so enter 8 digits when you have them for a reliable match.
ℹ️
Many cards issued (Spain) also carry the national scheme Redsys. The prefix is still the bank’s, and routing is decided at the time of payment. Payments in this country.

Look up a card from your assistant. The BIN database, plugged into your AI.

Paypedia’s MCP server exposes this database: network, issuer, country, debit or credit, and Luhn check, across 458,044 BINs and 5,805 IIN ranges, locally and with no API key.

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