Exhibit 12

QWEST CORPORATION

CALCULATION OF RATIO OF EARNINGS TO FIXED CHARGES

(UNAUDITED)



|                                                                                           |  |                          |       |   |      |   |       |      |  |   |       |   |  |      |       |   |  |   |       |  
|------------------------------------------------------------------------------------------ |  | ------------------------ | ----- | - | ---- | - | ----- | ---- |  | - | ----- | - |  | ---- | ----- | - |  | - | ----- | -
|                                                                                           |  | Years Ended December 31, |      
|                                                                                           |  | 2010                     |       |   | 2009 |   |       | 2008 |  |   | 2007  |   |  | 2006 |      
|                                                                                           |  | (Dollars in millions)    |      
|Income before income taxes                                                                 |  | $                        | 1,873 |   |      | $ | 1,921 |      |  | $ | 2,267 |   |  | $    | 2,440 |   |  | $ | 1,882 |  
|Add: estimated fixed charges                                                               |  |                          | 689   |   |      |   | 705   |      |  |   | 671   |   |  |      | 682   |   |  |   | 700   |  
|Add: estimated amortization of capitalized interest                                        |  |                          | 10    |   |      |   | 11    |      |  |   | 12    |   |  |      | 10    |   |  |   | 10    |  
|Less: interest capitalized                                                                 |  |                          | (12   | ) |      |   | (10   | )    |  |   | (14   | ) |  |      | (12   | ) |  |   | (12   | )
|                                                                                           |  |                          |       |   |      |   |       |      |  |   |       |   |  |      |       |   |  |   |       |  
|Total earnings available for fixed charges                                                 |  | $                        | 2,560 |   |      | $ | 2,627 |      |  | $ | 2,936 |   |  | $    | 3,120 |   |  | $ | 2,580 |  
|                                                                                           |  |                          |       |   |      |   |       |      |  |   |       |   |  |      |       |   |  |   |       |  
|Estimate of interest factor on rentals                                                     |  | $                        | 62    |   |      | $ | 63    |      |  | $ | 68    |   |  | $    | 62    |   |  | $ | 72    |  
|Interest expense, including amortization of premiums, discounts and debt issuance costs(1) |  |                          | 615   |   |      |   | 632   |      |  |   | 589   |   |  |      | 608   |   |  |   | 616   |  
|Interest capitalized                                                                       |  |                          | 12    |   |      |   | 10    |      |  |   | 14    |   |  |      | 12    |   |  |   | 12    |  
|                                                                                           |  |                          |       |   |      |   |       |      |  |   |       |   |  |      |       |   |  |   |       |  
|Total fixed charges                                                                        |  | $                        | 689   |   |      | $ | 705   |      |  | $ | 671   |   |  | $    | 682   |   |  | $ | 700   |  
|                                                                                           |  |                          |       |   |      |   |       |      |  |   |       |   |  |      |       |   |  |   |       |  
|Ratio of earnings to fixed charges                                                         |  |                          | 3.7   |   |      |   | 3.7   |      |  |   | 4.4   |   |  |      | 4.6   |   |  |   | 3.7   |  



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