The competent authority should consider the following matters when reviewing the application for subscriber number allocation prescribed in the previous article：1. Whether the type of the applied telecommunication numbers is necessary to provide services2. Whether the number of subscriber numbers reaches the minimum usage standard（Annex 2）3. Whether it includes subscriber growth forecast for more than three months in the future4. Whether it specifies the structure of subscribers’ access to the network and the connection structure with other telecommunications networks5. Whether it specifies the brand, model, quantity, capacity and function of the switch6. Whether it specifies the information on the numbers of subscriber numbers in use for prepaid and postpaid users and outward-ported users, and the information on the subscriber numbers leased to other providers of telecommunications services7. Whether it determines the effective subscribers based on the subscriber's subscription information and call information, the latest bill, etc., and provides a sampling report from an institution with public credibility, with a 95% statistical confidence level or higher, an error of plus or minus 2%, and the expected value of the effective subscriber ratio being greater than or equal to 0.988. Whether the use management violates other regulations.