piighost/kr-rrn

South Korean resident registration number: a six digit birth date, a dash, then a digit saying the century and the sex followed by six more. The date is validated and the first digit after the dash is restricted to one through four, which is what keeps it apart from any other thirteen digit sequence.

Label: KR_RRN

Pattern

(?<!\w)\d{2}(?:0[1-9]|1[0-2])(?:0[1-9]|[12]\d|3[01])-[1-4]\d{6}(?!\w)

Must be caught

• The form lists 900101-1234567 as the identifier. → 900101-1234567
• She registered under 851230-2345678 last year. → 851230-2345678

Must be left alone

• The code 901301-1234567 has no such month
• Reference 900101-5234567

Tags: kr, government-id, identity

Download the detector as TOML

Used by

• piighost/kr — South Korea: mobile phone and the resident registration number.

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