About the Brazilian CEP validator
The Brazilian CEP validator checks in the browser whether an input follows the eight-digit Brazilian postal-code structure and the 00000-000 mask. It helps clean pasted values and identify misplaced hyphens, internal spaces, letters, symbols, and extra digits while making clear that the check is format-only.
How to validate a CEP online
Type 01001000 or 01001-000, review the status, copy the formatted CEP or the eight digits, and use Correios Busca CEP when you need to confirm address, district, city, state, or official existence. By default, the typed CEP is not included in shared links.