Exhibit 12

QWEST CORPORATION

CALCULATION OF RATIO OF EARNINGS TO FIXED CHARGES

(UNAUDITED)



|                                                                                                                                        |  |                              |  |                          |  |        |  |       
|--------------------------------------------------------------------------------------------------------------------------------------- |  | ---------------------------- |  | ------------------------ |  | ------ |  | ------
|                                                                                                                                        |  | Three Months Ended March 31, |  | Years Ended December 31,
|                                                                                                                                        |  | 2008                         |  | 2007                     |  | 2006   |  | 2005  
|                                                                                                                                        |  | (Dollars in millions)       
|Income from continuing operations before income taxes, discontinued operations and cumulative effect of changes inaccounting principles |  | $563                         |  | $2,440                   |  | $1,882 |  | $1,628
|Add: estimated fixed charges                                                                                                            |  | 173                          |  | 682                      |  | 700    |  | 700   
|Add: estimated amortization of capitalized interest                                                                                     |  | 2                            |  | 10                       |  | 10     |  | 12    
|Less: interest capitalized                                                                                                              |  | (4)                          |  | (12)                     |  | (12)   |  | (10)  
|                                                                                                                                        |  |                              |  |                          |  |        |  |       
|Total earnings available for fixed charges                                                                                              |  | $734                         |  | $3,120                   |  | $2,580 |  | $2,330
|                                                                                                                                        |  |                              |  |                          |  |        |  |       
|                                                                                                                                        |  |                              |  |                         
|Estimate of interest factor on rentals                                                                                                  |  | $18                          |  | $62                      |  | $72    |  | $82   
|Interest expense, including amortization of premiums, discounts and debt issuance costs(1)                                              |  | 151                          |  | 608                      |  | 616    |  | 608   
|Interest capitalized                                                                                                                    |  | 4                            |  | 12                       |  | 12     |  | 10    
|                                                                                                                                        |  |                              |  |                          |  |        |  |       
|Total fixed charges                                                                                                                     |  | $173                         |  | $682                     |  | $700   |  | $700  
|                                                                                                                                        |  |                              |  |                          |  |        |  |       
|                                                                                                                                        |  |                              |  |                         
|Ratio of earnings to fixed charges                                                                                                      |  | 4.2                          |  | 4.6                      |  | 3.7    |  | 3.3   



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