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South Korean BRN Generator

Generate and format valid South Korean Business Registration Numbers (BRN) for corporate QA testing.

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About the South Korean BRN

The BRN (Business Registration Number / 사업자등록번호) is the 10-digit tax identification number issued to businesses by the National Tax Service (NTS) of South Korea.

It follows the 3-2-5 pattern and features a specialized weighted modulo 10 checksum algorithm.

Frequently Asked Questions