Exhibit 12

QWEST CORPORATION

CALCULATION OF RATIO OF EARNINGS TO FIXED CHARGES

(UNAUDITED)



|                                                                                                                                         |  |                          |  |        |  |        |  |        |  |       
|---------------------------------------------------------------------------------------------------------------------------------------- |  | ------------------------ |  | ------ |  | ------ |  | ------ |  | ------
|                                                                                                                                         |  | Years Ended December 31,
|                                                                                                                                         |  | 2007                     |  | 2006   |  | 2005   |  | 2004   |  | 2003  
|                                                                                                                                         |  | (Dollars in millions)   
|Income from continuing operations before income taxes, discontinued operations and cumulative effect of changes in accounting
principles |  | $2,377                   |  | $1,851 |  | $1,530 |  | $1,742 |  | $1,758
|Add: estimated fixed charges                                                                                                             |  | 655                      |  | 669    |  | 668    |  | 647    |  | 643   
|Add: estimated amortization of capitalized interest                                                                                      |  | 9                        |  | 10     |  | 12     |  | 12     |  | 13    
|Less: interest capitalized                                                                                                               |  | (6)                      |  | (8)    |  | (7)    |  | (9)    |  | (13)  
|                                                                                                                                         |  |                          |  |        |  |        |  |        |  |       
|Total earnings available for fixed charges                                                                                               |  | 3,035                    |  | 2,522  |  | 2,203  |  | 2,392  |  | 2,401 
|                                                                                                                                         |  |                          |  |        |  |        |  |        |  |       
|Estimate of interest factor on rentals                                                                                                   |  | 39                       |  | 45     |  | 54     |  | 54     |  | 57    
|Interest expense, including amortization of premiums, discounts and debt issuance costs(1)                                               |  | 610                      |  | 616    |  | 607    |  | 584    |  | 573   
|Interest capitalized                                                                                                                     |  | 6                        |  | 8      |  | 7      |  | 9      |  | 13    
|                                                                                                                                         |  |                          |  |        |  |        |  |        |  |       
|Total fixed charges                                                                                                                      |  | $655                     |  | $669   |  | $668   |  | $647   |  | $643  
|                                                                                                                                         |  |                          |  |        |  |        |  |        |  |       
|Ratio of earnings to fixed charges                                                                                                       |  | 4.6                      |  | 3.8    |  | 3.3    |  | 3.7    |  | 3.7   



|(1) | Interest expense includes only interest related to long-term borrowings and
capital lease obligations.
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