American Express BIN Lookup

Look up Bank Identification Numbers for American Express cards.

About American Express BINs

BIN Prefix Range 34, 37 Card Length 15 digits

American Express (Amex) is both a card issuer and payment network. Amex cards start with 34 or 37 and are 15 digits long. Known for premium cards and merchant services, Amex operates primarily in North America and select international markets.

American Express BIN Lookup via API

Look up any American Express BIN using our API:

Terminal
curl -X POST "https://api.binlookupapi.com/v1/bin" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"number": 34}'
Terminal
// JavaScript example
const response = await fetch('https://api.binlookupapi.com/v1/bin', {
  method: 'POST',
  headers: {
    'Authorization': 'Bearer YOUR_API_KEY',
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({ number: 34 })
});

const data = await response.json();
// Returns: scheme, funding, brand, category, country, issuer, etc.
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