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Korean Resident's Registration Number

Published on Sep 2, 2026

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Korean resident registration number (RRN) is a 13-digit number issued to all residents of South Korea regardless of their nationality.

Validator

Korean Resident's Registration Number — Validates Mod 11–10 checksum.

Matched expressions

Regex expressions	Description	Score
`\b\d{6}-\d{7}\b`	Matches a 13-digit number of the format NNNNNN-NNNNNNN delimited by hyphen.	1

Ignored expressions

None

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