Q&A on new ARC/APRC ID number rules 12/16/2020 04:52 PM Photo courtesy of the NIA Taipei, Dec. 16 (CNA) The following are answers to some questions related to the new ARC and APRC ID number rules, based on information provided by the National Immigration Agency (NIA. For other questions in various languages, please visit the National Immigration Agency's website. ■Question: What is the specific format of the new number? Answer: 1. The English letter is the area code, indicating the place of application, and corresponding to the format of Taiwanese citizen ID cards. 2. The second digit indicates gender, 8 for male and 9 for female.