Identify a card’s issuer. From its first digits, without ever sending the full number.

Network (official ISO/IEC 7812 ranges), issuing bank and country from a database of 458,000 BINs, Luhn check digit and the expected length if you paste a full number.

The calculation runs in your browser, and the number you enter is never transmitted. To find the answer, the browser downloads the slice of the reference database that matches the first three digits, so the host sees those three digits and nothing more. Nothing you enter is stored.

Recognized networksCBAMEX
✓ Runs locally💳 458,000 BINs⋮ up to 20 BINs at once🌍 issuing country Also on MCP: 7 tools
Examples:

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

BIN directory. By country, then by issuer.

Documented prefixes, those with a named issuer and a recognized network, each have their own page. Browse them by issuing country.

🇬🇧 United Kingdom 5,162🇩🇰 Denmark 4,083🇫🇷 France 3,289🇪🇸 Spain 3,020🇩🇪 Germany 2,575🇮🇹 Italy 2,401🇺🇦 Ukraine 1,334🇵🇱 Poland 1,302🇦🇹 Austria 875🇨🇭 Switzerland 798🇳🇱 Netherlands 746🇳🇴 Norway 649🇸🇪 Sweden 574🇷🇴 Romania 567🇮🇪 Ireland 555🇧🇪 Belgium 539🇵🇹 Portugal 532🇭🇷 Croatia 485🇬🇷 Greece 480🇧🇬 Bulgaria 426🇷🇸 Serbia 405🇫🇮 Finland 389🇨🇿 Czechia 384🇭🇺 Hungary 377🇧🇦 Bosnia & Herzegovina 302🇱🇺 Luxembourg 298🇸🇰 Slovakia 266🇱🇻 Latvia 249🇱🇹 Lithuania 248🇨🇾 Cyprus 217🇸🇮 Slovenia 194🇲🇹 Malta 188🇲🇰 North Macedonia 185🇲🇩 Moldova 166🇪🇪 Estonia 144🇲🇪 Montenegro 130🇦🇱 Albania 105🇮🇸 Iceland 86🇦🇩 Andorra 61🇱🇮 Liechtenstein 38🇸🇲 San Marino 32🇲🇨 Monaco 13

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
In France, more than 95% of cards are co-badged CB + Visa/Mastercard. The BIN belongs to the bank, and routing (to CB, the domestic scheme, or to an international network) is decided at checkout. That choice of brand is what the checkout demos illustrate.

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.

Paypedia MCP console7 tools

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    The two databases are shown separately, and mismatches are flagged.Understanding MCP →See all 7 tools →