Exhibit 12

QWEST CORPORATION

CALCULATION OF RATIO OF EARNINGS TO FIXED CHARGES

(UNAUDITED)



|                                                                                                                                         |  |                            |      |                          |      |        |      |       
|---------------------------------------------------------------------------------------------------------------------------------------- |  | -------------------------- | ---- | ------------------------ | ---- | ------ | ---- | ------
|                                                                                                                                         |  | SixMonthsEndedJune 30,2008 |      | Years Ended December 31,
|                                                                                                                                         |  |                            | 2007 |                          | 2006 |        | 2005
|                                                                                                                                         |  | (Dollars in millions)     
|Income from continuing operations before income taxes, discontinued operations and cumulative effect of changes in accounting
principles |  | $1,226                     |      | $2,440                   |      | $1,882 |      | $1,628
|Add: estimated fixed charges                                                                                                             |  | 340                        |      | 682                      |      | 700    |      | 700   
|Add: estimated amortization of capitalized interest                                                                                      |  | 5                          |      | 10                       |      | 10     |      | 12    
|Less: interest capitalized                                                                                                               |  | (7)                        |      | (12)                     |      | (12)   |      | (10)  
|                                                                                                                                         |  |                            |      |                          |      |        |      |       
|Total earnings available for fixed charges                                                                                               |  | $1,564                     |      | $3,120                   |      | $2,580 |      | $2,330
|                                                                                                                                         |  |                            |      |                          |      |        |      |       
|                                                                                                                                         |  |                            |      |                         
|Estimate of interest factor on rentals                                                                                                   |  | $34                        |      | $62                      |      | $72    |      | $82   
|Interest expense, including amortization of premiums, discounts and debt issuance costs(1)                                               |  | 299                        |      | 608                      |      | 616    |      | 608   
|Interest capitalized                                                                                                                     |  | 7                          |      | 12                       |      | 12     |      | 10    
|                                                                                                                                         |  |                            |      |                          |      |        |      |       
|Total fixed charges                                                                                                                      |  | $340                       |      | $682                     |      | $700   |      | $700  
|                                                                                                                                         |  |                            |      |                          |      |        |      |       
|                                                                                                                                         |  |                            |      |                         
|Ratio of earnings to fixed charges                                                                                                       |  | 4.6                        |      | 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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