Generate valid document numbers for testing and development purposes. Supports Brazilian CNPJ, CPF, US EIN, and SSN formats with proper validation algorithms.
Important Notice
These documents are generated for testing and development purposes only. Do not use for fraudulent activities or real business transactions.
CPF (Cadastro de Pessoas Físicas)
Brazilian individual taxpayer registry number with mathematical validation using check digits.
CNPJ (Cadastro Nacional da Pessoa Jurídica)
Brazilian national registry of legal entities with mathematical validation using check digits.
EIN (Employer Identification Number)
US federal tax identification number used by businesses for tax reporting purposes.
SSN (Social Security Number)
US individual identification number. Generated numbers are for testing purposes only and should never be used for real individuals.