Exhibit 12

Qwest Corporation

CALCULATION OF RATIO OF EARNINGS TO FIXED CHARGES

(UNAUDITED)



|                                                                                           |  |                           |     |   |                          |  |       |      |  |  |       |   |  |      |       |   |      |  |       |   |  |  |       |  
|------------------------------------------------------------------------------------------ |  | ------------------------- | --- | - | ------------------------ |  | ----- | ---- |  |  | ----- | - |  | ---- | ----- | - | ---- |  | ----- | - |  |  | ----- | -
|                                                                                           |  | ThreemonthsendedMarch 31, |     |   | Years ended December 31, | 
|                                                                                           |  | 2011                      |     |   | 2010                     |  |       | 2009 |  |  | 2008  |   |  | 2007 |       |   | 2006 | 
|                                                                                           |  |                           |     |   |                          |  |       |      |  |  |       |   |  |      |       |   |      | 
|Income before income taxes                                                                 |  | $                         | 490 |   |                          |  | 1,873 |      |  |  | 1,921 |   |  |      | 2,267 |   |      |  | 2,440 |   |  |  | 1,882 |  
|Add: estimated fixed charges                                                               |  |                           | 171 |   |                          |  | 689   |      |  |  | 705   |   |  |      | 671   |   |      |  | 682   |   |  |  | 700   |  
|Add: estimated amortization of capitalized interest                                        |  |                           | 2   |   |                          |  | 10    |      |  |  | 11    |   |  |      | 12    |   |      |  | 10    |   |  |  | 10    |  
|Less: interest capitalized                                                                 |  |                           | (3  | ) |                          |  | (12   | )    |  |  | (10   | ) |  |      | (14   | ) |      |  | (12   | ) |  |  | (12   | )
|                                                                                           |  |                           |     |   |                          |  |       |      |  |  |       |   |  |      |       |   |      |  |       |   |  |  |       |  
|Total earnings available for fixed charges                                                 |  | $                         | 660 |   |                          |  | 2,560 |      |  |  | 2,627 |   |  |      | 2,936 |   |      |  | 3,120 |   |  |  | 2,580 |  
|                                                                                           |  |                           |     |   |                          |  |       |      |  |  |       |   |  |      |       |   |      |  |       |   |  |  |       |  
|Estimate of interest factor on rentals                                                     |  | $                         | 18  |   |                          |  | 62    |      |  |  | 63    |   |  |      | 68    |   |      |  | 62    |   |  |  | 72    |  
|Interest expense, including amortization of premiums, discounts and debt issuance costs(1) |  |                           | 150 |   |                          |  | 615   |      |  |  | 632   |   |  |      | 589   |   |      |  | 608   |   |  |  | 616   |  
|Interest capitalized                                                                       |  |                           | 3   |   |                          |  | 12    |      |  |  | 10    |   |  |      | 14    |   |      |  | 12    |   |  |  | 12    |  
|                                                                                           |  |                           |     |   |                          |  |       |      |  |  |       |   |  |      |       |   |      |  |       |   |  |  |       |  
|Total fixed charges                                                                        |  | $                         | 171 |   |                          |  | 689   |      |  |  | 705   |   |  |      | 671   |   |      |  | 682   |   |  |  | 700   |  
|                                                                                           |  |                           |     |   |                          |  |       |      |  |  |       |   |  |      |       |   |      |  |       |   |  |  |       |  
|Ratio of earnings to fixed charges                                                         |  |                           | 3.9 |   |                          |  | 3.7   |      |  |  | 3.7   |   |  |      | 4.4   |   |      |  | 4.6   |   |  |  | 3.7   |  



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