Chinese Resident ID Validator
Validate Chinese Resident Identity Card numbers in real time under GB 11643-1999 and ISO 7064 MOD 11-2.
How Chinese Resident ID Validation Works
Validation checks all 18 characters: administrative region code, valid birth date in the calendar, and the ISO 7064 MOD 11-2 weighted checksum formula.
It verifies whether the final check character matches the official modulo 11 algorithm defined by China's Ministry of Public Security.