Romanian CNP decoder
A Romanian CNP (Cod Numeric Personal) is 13 digits that encode a person’s sex and century of birth, their date of birth, the county where the number was issued, a serial, and a check digit. This decoder reads each field and verifies the modulo-11 checksum.
Everything runs in your browser, so the CNP you enter is never uploaded. This is a structure and checksum decoder — it does not confirm the number is registered.