The telecommunications enterprise should cooperate with the competent authority to adjust the telecommunications numbers it has been allocated.
When a part or all of the business of the telecommunications enterprise terminates, and the competent authority reallocates the subscriber numbers to other telecommunications enterprises, the telecommunications enterprise receiving the allocation should retain the subscriber number for six months for the original subscriber to apply for use, unless they are IoT numbers.

The use of telecommunications numbers by telecommunications enterprises should comply with the following regulations：
1. Except for subscriber numbers, telecommunications numbers are not allowed to be leased or lent.
2. The numbers terminated by subscribers should be retained for three months, except for the IoT numbers.
3. The telecommunications enterprise should monthly update the statistics of the leased and lease-terminated subscriber numbers and retain them for at least three months.
The retention period of the subscriber number prescribed in Subparagraph 2 of the preceding paragraph does not apply to those with the consent of the new subscriber.

After the telecommunications enterprise allocated with subscriber numbers by the competent authority, it should stipulate the number selection principle of the golden numbers except for the IoT numbers, and report it to the competent authority for reference before implementation; the same should apply to revisions hereof.
The number selection principle prescribed in the preceding paragraph should include the basic number selection principle（as shown in the attached tables）; the subscriber numbers included in the number selection principle by the telecommunications enterprise should be provided to subscribers for lease through auction or number selection with a fee.

• Tables Basic number selection principles.pdf

The telecommunications enterprise allocated with telecommunications numbers should obtain routing information and provide communication services to the called subscribers when its subscribers sending messages.
The preceding obligation shall be determined in accordance with the provisions of the subparagraphs during the following communication：
1. Long-distance communication: Telecommunications enterprises providing long-distance communication services
2. International telecommunication voice service: Telecommunication enterprises providing international telecommunication services

Prior to the telecommunications enterprise assigns subscribers to use telecommunication numbers, they should verify and register subscribers’ information.
The preceding provision shall be handled by the National Communications Commission in accordance with relevant regulations.

When a telecommunications enterprise leases（lends）subscriber numbers to other telecommunications enterprises to provide telecommunications services, it should not restrict the other telecommunications enterprises from providing number portability services and equal access services to subscribers.
The telecommunications enterprise should obtain an agreement with the other telecommunications enterprise on the implementation of the provisions of Paragraph 1, Article 16 of the Act prior to leasing（lending）the subscriber number to the other telecommunications enterprise.