The JCB credit card number is the 16- to 19-digit number printed on the front of the card; JCB cards commonly start with 3528 to 3589, and MyJCB is the official app/service for checking card usage and account details.

Where to look

  • Front of the physical card: the main long number.
  • MyJCB app or website: use it to view your card account and statements.
  • If you only need to verify a JCB card pattern, JCB card numbers typically fall within the 3528–3589 range.

Security note

  • The security code is separate from the card number and is printed on the back of the card, as JCB explains on its card-handling notice.
  • Never share your full card number, security code, or login details publicly.

If the card is missing

  • Check your saved card image in a secure wallet app or your bank’s card management app.
  • Contact JCB support through the official support page if the card is lost or stolen.

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