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CNPJ Validator
Check if a CNPJ number is valid according to the official algorithm
CNPJ Validator
The CNPJ validator checks if a number follows the official algorithm established by the Brazilian Federal Revenue. This tool is essential for:
- Verification of suppliers and business partners
- Data validation in business systems
- Checking tax documentation
How to identify headquarters and branches by CNPJ
In the CNPJ, digits 9 to 12 identify the type of establishment:
- 0001: Company headquarters
- 0002 onwards: Branches, in order of registration
Did you know?
A single company can have up to 9999 branches registered with distinct CNPJs, all sharing the same first 8 digits.