Does my full card number leave my browser?

No. The Luhn check runs locally, and only the first 6–8 digits (the BIN) are sent to our server — never the full number.

Does a BIN lookup authorize or charge the card?

No. It only identifies card metadata from the BIN and can run a local Luhn check on a full number. It does not contact the issuer or process a payment.

The Bank Identification Number — the first 6–8 digits of a card number that identify the issuing scheme, type and brand.

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ProCloud

BIN / Card Lookup

Identify a card by its BIN: scheme, type, brand — bank and country for subscribers. 10 free weekly.

What it does

Scheme, type, brand and prepaid detection
Bank and country for premium accounts
In-browser Luhn check on the full number
Only the first 6–8 digits (BIN) are sent to the server
10 free lookups every week

How it works

1Enter a card number or its first 6–8 digits.
2The Luhn check runs locally in your browser.
3Look up the BIN to see scheme, type and brand.
4Premium accounts also see bank and country.

Use cases

Fraud checks matching card country to billing country
Identifying card brand before processing
Validating card numbers with the Luhn check

Try BIN / Card Lookup

Frequently asked questions

Does my full card number leave my browser?: No. The Luhn check runs locally, and only the first 6–8 digits (the BIN) are sent to our server — never the full number.
Does a BIN lookup authorize or charge the card?: No. It only identifies card metadata from the BIN and can run a local Luhn check on a full number. It does not contact the issuer or process a payment.
What is a BIN?: The Bank Identification Number — the first 6–8 digits of a card number that identify the issuing scheme, type and brand.