When providing subscriber numbers to those engaged in the wholesale resale services of subscriber numbers, telecommunications enterprises allocated with subscriber numbers shall conduct a review of the following matters concerning the said wholesale resellers:
1. Registration of the telecommunications business in accordance with the Act, including the specification of the corresponding service content.
2. Basic information, such as the nature of the business, capital, and number of employees.
3. Purposes of wholesaling the subscriber numbers.
4. Verification and registration of subscriber information according to the Regulations, and the completion of the audit mechanism specified in Article 16.
Telecommunications enterprises allocated with subscriber numbers shall, in addition to reviewing the written documents in accordance with the provisions of the preceding paragraph, conduct on-site visits whenever deemed necessary.

Telecommunications enterprises engaged in the wholesale resale service of subscriber numbers shall not provide the subscriber numbers to others for engaging in another wholesale resale service of subscriber numbers.
Telecommunications enterprises allocated with subscriber numbers shall, in accordance with the preceding article and Article 17, undertake a review of telecommunications enterprises engaged in the wholesale resale service of subscriber numbers to ensure compliance with the provisions of the preceding paragraph.

The subscriber numbers assigned by telecommunications enterprises allocated with subscriber numbers used for mobile telecommunications networks shall be paired with the International Mobile Subscriber Identity（IMSI）of the corresponding mobile telecommunications networks.
When providing services, telecommunications enterprises engaged in the wholesale resale service of subscriber numbers shall not separate the subscriber numbers provided by the telecommunications enterprises allocated with subscriber numbers, as stated in the preceding paragraph, from their associated International Mobile Subscriber Identity（IMSI）.

Telecommunications enterprises allocated with subscriber numbers shall not assign subscriber numbers to the subscriber in any of the following circumstances:
1. The information verified and registered in accordance with Articles 3 to 5 is incomplete or false;
2. Lacking appropriate risk control measures as required by Article 15;
3. Subscribers whose subscriber number has been suspended or terminated by the telecommunications enterprise allocated with subscriber numbers within one year in accordance with Paragraph 1 of Article 18, and who fail to restore the said use in accordance with Paragraph 2 of the preceding section of the same article, for applications exceeding one subscriber number.
4. The descriptions of use purposes provided by corporate customers in accordance with Subparagraph 1 of Article 4 potentially violate regulatory enforcement or prohibitions.
5. Other matters under which restrictions shall be imposed in accordance with laws and regulations.