Exhibit 12

QWEST CORPORATION

CALCULATION OF RATIO OF EARNINGS TO FIXED CHARGES

(UNAUDITED)



|                                                                                                                                         |  |                                        |       |   |                          |      |       |   |      |   |       |      |  |   |       |   |  |   |       |   |  |   |       |  
|---------------------------------------------------------------------------------------------------------------------------------------- |  | -------------------------------------- | ----- | - | ------------------------ | ---- | ----- | - | ---- | - | ----- | ---- |  | - | ----- | - |  | - | ----- | - |  | - | ----- | -
|                                                                                                                                         |  | Nine
MonthsEnded    September 30, 2007 |       |   | 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 |  | $                                      | 1,816 |   |                          | $    | 1,851 |   |      | $ | 1,530 |      |  | $ | 1,742 |   |  | $ | 1,758 |   |  | $ | 2,435 |  
|Add: estimated fixed charges                                                                                                             |  |                                        | 489   |   |                          |      | 669   |   |      |   | 668   |      |  |   | 647   |   |  |   | 643   |   |  |   | 634   |  
|Add: estimated amortization of capitalized interest                                                                                      |  |                                        | 7     |   |                          |      | 10    |   |      |   | 12    |      |  |   | 12    |   |  |   | 13    |   |  |   | 14    |  
|Less: interest capitalized                                                                                                               |  |                                        | (5    | ) |                          |      | (8    | ) |      |   | (7    | )    |  |   | (9    | ) |  |   | (13   | ) |  |   | (24   | )
|                                                                                                                                         |  |                                        |       |   |                          |      |       |   |      |   |       |      |  |   |       |   |  |   |       |   |  |   |       |  
|Total earnings available for fixed charges                                                                                               |  | $                                      | 2,307 |   |                          | $    | 2,522 |   |      | $ | 2,203 |      |  | $ | 2,392 |   |  | $ | 2,401 |   |  | $ | 3,059 |  
|                                                                                                                                         |  |                                        |       |   |                          |      |       |   |      |   |       |      |  |   |       |   |  |   |       |   |  |   |       |  
|Estimate of interest factor on rentals                                                                                                   |  | $                                      | 29    |   |                          | $    | 45    |   |      | $ | 54    |      |  | $ | 54    |   |  | $ | 57    |   |  | $ | 69    |  
|Interest expense, including amortization of premiums, discounts and debt issuance costs (1)                                              |  |                                        | 455   |   |                          |      | 616   |   |      |   | 607   |      |  |   | 584   |   |  |   | 573   |   |  |   | 541   |  
|Interest capitalized                                                                                                                     |  |                                        | 5     |   |                          |      | 8     |   |      |   | 7     |      |  |   | 9     |   |  |   | 13    |   |  |   | 24    |  
|                                                                                                                                         |  |                                        |       |   |                          |      |       |   |      |   |       |      |  |   |       |   |  |   |       |   |  |   |       |  
|Total fixed charges                                                                                                                      |  | $                                      | 489   |   |                          | $    | 669   |   |      | $ | 668   |      |  | $ | 647   |   |  | $ | 643   |   |  | $ | 634   |  
|                                                                                                                                         |  |                                        |       |   |                          |      |       |   |      |   |       |      |  |   |       |   |  |   |       |   |  |   |       |  
|Ratio of earnings to fixed charges                                                                                                       |  |                                        | 4.7   |   |                          |      | 3.8   |   |      |   | 3.3   |      |  |   | 3.7   |   |  |   | 3.7   |   |  |   | 4.8   |  

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