If a telecommunications enterprise does not meet the minimum utilization rate of subscriber numbers set by the competent authority, the competent authority shall abolish part or all of the allocation of its subscriber numbers. However, this does not apply to those who get the allocated subscriber numbers for the first time less than three years or re-allocated less than one year.The calculation method of the minimum usage rate and the number of recovery of the subscriber numbers are shown in Annex 2.Annex 2 Minimum usage rate of subscriber numbers and calculation method of the quantity to be recovered.pdf