The CNPJ validator checks if a number follows the official algorithm established by the Brazilian Federal Revenue. This tool is essential for:
The validation only checks compliance with the algorithm, not the current status of the company with the Federal Revenue.
In the CNPJ, digits 9 to 12 identify the type of establishment:
A single company can have up to 9999 branches registered with distinct CNPJs, all sharing the same first 8 digits.