Regex Tester & Validator

Validates an Argentinian postal code in the CPA (Código Postal Argentino) format. It captures three parts via named groups: the province letter (excluding 'i' and 'o' to avoid confusion with 1 and 0), 1-4 digits for the number, and 3 letters identifying the locality/district. Case-insensitive matching makes it suitable for validating addresses in forms, shipping systems, or geographic data processing for Argentina.