CNPJ Validator (Brazilian Company ID)
Free CNPJ validator — enter a Brazilian CNPJ (company registration number), including the new alphanumeric format, and instantly check whether the check digits are valid. Runs entirely in your browser.
Accepts the new alphanumeric CNPJ format (letters and numbers) as well as the classic all-numeric one.
Runs entirely in your browser — nothing is sent to a server or stored.
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