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REGON Number Checker
Check any 9-digit or 14-digit Polish REGON number with automatic format detection and checksum verification.
Polish ID Number Generator
Generate valid Polish ID card (dowód osobisty) numbers with correct check digits. Each number follows the official series-and-number format used on Poland's national identity card.
Mikrorachunek Generator
Generate your individual Polish tax account number (mikrorachunek podatkowy) from a PESEL or NIP.
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