Exhibit 12

QWEST CORPORATION

CALCULATION OF RATIO OF EARNINGS TO FIXED CHARGES

(Unaudited)



|                                                                                                                                         |  |                          |       |   |      |   |       |      |  |   |       |   |  |      |       |   |  |   |       |  
|---------------------------------------------------------------------------------------------------------------------------------------- |  | ------------------------ | ----- | - | ---- | - | ----- | ---- |  | - | ----- | - |  | ---- | ----- | - |  | - | ----- | -
|                                                                                                                                         |  | Years Ended December 31, |      
|                                                                                                                                         |  | 2006                     |       |   | 2005 |   |       | 2004 |  |   | 2003  |   |  | 2002 |      
|                                                                                                                                         |  | (Dollars in millions)    |      
|Income from continuing operations before income taxes, discontinued operations and cumulative effect of changes in accounting
principles |  | $                        | 1,851 |   |      | $ | 1,530 |      |  | $ | 1,742 |   |  | $    | 1,758 |   |  | $ | 2,435 |  
|Add: Estimated fixed charges                                                                                                             |  |                          | 669   |   |      |   | 668   |      |  |   | 647   |   |  |      | 643   |   |  |   | 634   |  
|Add: Estimated amortization of capitalized interest                                                                                      |  |                          | 10    |   |      |   | 12    |      |  |   | 12    |   |  |      | 13    |   |  |   | 14    |  
|Less: Interest capitalized                                                                                                               |  |                          | (8    | ) |      |   | (7    | )    |  |   | (9    | ) |  |      | (13   | ) |  |   | (24   | )
|                                                                                                                                         |  |                          |       |   |      |   |       |      |  |   |       |   |  |      |       |   |  |   |       |  
|Total earnings available for fixed charges                                                                                               |  |                          | 2,522 |   |      |   | 2,203 |      |  |   | 2,392 |   |  |      | 2,401 |   |  |   | 3,059 |  
|Estimate of interest factor on rentals                                                                                                   |  |                          | 45    |   |      |   | 54    |      |  |   | 54    |   |  |      | 57    |   |  |   | 69    |  
|Interest expense, including amortization of premiums, discounts and debt issuance costs                                                  |  |                          | 616   |   |      |   | 607   |      |  |   | 584   |   |  |      | 573   |   |  |   | 541   |  
|Interest capitalized                                                                                                                     |  |                          | 8     |   |      |   | 7     |      |  |   | 9     |   |  |      | 13    |   |  |   | 24    |  
|                                                                                                                                         |  |                          |       |   |      |   |       |      |  |   |       |   |  |      |       |   |  |   |       |  
|Total fixed charges                                                                                                                      |  | $                        | 669   |   |      | $ | 668   |      |  | $ | 647   |   |  | $    | 643   |   |  | $ | 634   |  
|                                                                                                                                         |  |                          |       |   |      |   |       |      |  |   |       |   |  |      |       |   |  |   |       |  
|Ratio of earnings to fixed charges                                                                                                       |  |                          | 3.8   |   |      |   | 3.3   |      |  |   | 3.7   |   |  |      | 3.7   |   |  |   | 4.8   |