CNPJ (numeric and alphanumeric)
Generate, validate and format Brazilian company IDs, including the new format with letters (Jul 2026).
Runs in your browser
Fictitious numbers, for testing software only. They may match the document of a real person or company: using them to identify yourself, sign up, buy or open an account is a crime under Brazilian law (Penal Code, articles 299 and 307).
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