DNI (Argentina)

The DNI (Documento Nacional de Identidad) is Argentina's official identity document, issued by RENAPER (Registro Nacional de las Personas). It identifies every citizen and resident foreigner from birth. The DNI number typically has 7 or 8 digits. DNIs issued before 1968 may have 6; newer ones (since mass digitization in the 2010s) reach 8. There's no embedded check digit — format validation only verifies length and numeric charset. The DNI is the base for CUIL (workers) and CUIT (self-employed and companies): both identifiers embed the 8 DNI digits between a 2-digit prefix and a check digit. That's why many systems request the DNI separately to cross-reference against tax identifiers. Normadata validates the DNI by checking range (1 to 99,999,999) and charset. Verifying real identity (document ownership, validity, deceased status) requires a query to RENAPER, which needs a formal agreement.