Mastercard check

Client

Mastercard primary account numbers use legacy 51–55 two-digit prefixes or newer 222100–272099 six-digit BIN ranges. Paste for Luhn validation and length hints—no Mastercard network API.

Mastercard BIN ranges

Toolcore applies widely documented open ranges. Issuers add BINs over time—heuristic label is a hint, not a contractual assignment.

Sensitive data: checks run only in your browser. Prefer processor-published test card numbers, never live PANs on shared devices.
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Spaces and dashes are stripped before counting digits and running Luhn. Card-network labels come from common public BIN/IIN ranges—they may mismatch exotic co-branded or new ranges.

16 digits after cleanup

Likely network: Visa

Luhn checksum: passes — algorithm-only; does not mean the card is active or genuine.

Common use cases

  • Validate 2-series BIN test cards from processor documentation.
  • Catch truncated BIN paste during integration QA.

Common mistakes to avoid

  • Ignoring 2-series BIN when only checking 51–55

    Modern Mastercard products may start with 2221xx—not only 51–55.

FAQ

How to identify Mastercard by number?

Heuristic: prefix 51–55 or six-digit BIN 222100–272099, usually 16 digits, Luhn pass.

Common search terms

Phrases people search for that match this tool. See the full long-tail keyword index.

  • credit card luhn check online
  • visa mastercard bin checker browser
  • payment card checksum validator no upload
  • validate primary account number luhn locally
  • discover amex prefix checker heuristic online

More tools

Related utilities you can open in another tab—mostly client-side.