The telecommunications enterprise should pay the specific number usage fee for the current year from July 1 to July 31 of the same year in accordance with the specific number charge table (as the attached tables). Those who are allocated with a specific number after July 1 each year should pay the usage fee for the specific number within one month from the next day following the allocation. For the allocated specific number, the usage fee for the specific number in the current year is calculated and paid pro rata to the number of days from the next day following the allocation to December 31 of the year in relation to the number of days in the year. Prior to June 30 of each year, for the specific number recovered by the Commission, the usage fee of the said specific number for the year should be calculated pro rata to the number of days from January 1 of the year to the recovery date in relation to the number of days in the year, and paid within one month from the next day following the recovery date. After the telecommunications enterprise pays the usage fee for a specific number, when the Commission recovers the said specific number, the Commission will refund the usage fee of the specific number in the current year without interest, pro rata to the number of days from the recovery date to December 31 of the year in relation to the number of days in the year.