CNP Validator

The CNP Validator analyzes a 13-digit Romanian personal numeric code to determine validity and extract embedded data components. Conceptually it treats the CNP as a structured, checksum-protected key where the first digit encodes gender and century, digits 2–7 encode birth date, digits 8–9 encode county, and digits 10–12 encode a unique sequence with a final checksum digit. The tool performs a format check, validates the checksum using the Romanian algorithm, and decodes birth date, gender, and county when possible. Beneficiaries include developers integrating identity workflows, HR teams validating candidate information, and data teams ensuring data integrity. Its unique value lies in deterministic checksum verification combined with component extraction, operating locally to minimize external data exposure. Core features include input validation, checksum calculation, birth date reconstruction, gender and county decoding, and a concise validity flag. Typical use cases include onboarding pipelines, data cleansing, and audit checks for records containing CNP fields.
The tool maintains a focus on deterministic logic over external lookups, ensuring consistent results across environments. It supports automated validation in data pipelines, form submissions, and batch processing tasks where immediate feedback on CNP validity is required.