Exhibit 12.1



Ratio of Earnings to Fixed Charges

Syniverse Holdings, LLC and Predecessor

(dollars in thousands)



|                                                          |  |                         |        |                                            |   |                                              |  |                              |         |  |   |        |  |   |        |  |   |         |  
|--------------------------------------------------------- |  | ----------------------- | ------ | ------------------------------------------ | - | -------------------------------------------- |  | ---------------------------- | ------- |  | - | ------ |  | - | ------ |  | - | ------- | -
|                                                          |  | Predecessor             |        | Successor                                  |   | Successor                                    | 
|                                                          |  | Year Ended December 31, |        | Period from January 1 to February 13, 2002 |   | Period from February 14 to December 31, 2002 |  | Year Ended December 31, 2003 |        
|                                                          |  | 1999                    |        | 2000                                       |   | 2001                                         |  |                              |        
|Net Income                                                |  | $                       | 46,104 |                                            | $ | 51,051                                       |  | $                            | 69,258  |  | $ | 6,917  |  | $ | 631    |  | $ | (57,926 | )
|Provision for income taxes                                |  |                         | 28,156 |                                            |   | 32,548                                       |  |                              | 43,895  |  |   | 4,418  |  |   | 9,320  |  |   | 10,057  |  
|                                                          |  |                         |        |                                            |   |                                              |  |                              |         |  |   |        |  |   |        |  |   |         |  
|Income before income taxes                                |  | $                       | 74,260 |                                            | $ | 83,599                                       |  | $                            | 113,153 |  | $ | 11,335 |  | $ | 9,951  |  | $ | (47,869 | )
|                                                          |  |                         |        |                                            |   |                                              |  |                              |         |  |   |        |  |   |        |  |   |         |  
|Fixed charges:                                            |  |                         |        |                                            |   |                                              |  |                              |         |  |   |        |  |   |        |  |   |         |  
|Interest expensed                                         |  | $                       | 2,822  |                                            | $ | 22                                           |  | $                            |        |  | $ |       |  | $ | 45,428 |  | $ | 46,235  |  
|Amortization of deferred financing costs and discount     |  |                         |       |                                            |   |                                             |  |                              |        |  |   |       |  |   | 8,677  |  |   | 11,893  |  
|Estimated interest factor on operating leases (see below) |  |                         | 343    |                                            |   | 403                                          |  |                              | 463     |  |   | 59     |  |   | 864    |  |   | 871     |  
|                                                          |  |                         |        |                                            |   |                                              |  |                              |         |  |   |        |  |   |        |  |   |         |  
|Total fixed charges                                       |  |                         | 3,165  |                                            |   | 425                                          |  |                              | 463     |  |   | 59     |  |   | 54,969 |  |   | 58,999  |  
|                                                          |  |                         |        |                                            |   |                                              |  |                              |         |  |   |        |  |   |        |  |   |         |  
|Earnings:                                                 |  |                         |        |                                            |   |                                              |  |                              |         |  |   |        |  |   |        |  |   |         |  
|Income before income taxes                                |  |                         | 74,260 |                                            |   | 83,599                                       |  |                              | 113,153 |  |   | 11,335 |  |   | 9,951  |  |   | (47,869 | )
|Fixed charges                                             |  |                         | 3,165  |                                            |   | 425                                          |  |                              | 463     |  |   | 59     |  |   | 54,969 |  |   | 58,999  |  
|                                                          |  |                         |        |                                            |   |                                              |  |                              |         |  |   |        |  |   |        |  |   |         |  
|Total earnings                                            |  | $                       | 77,425 |                                            | $ | 84,024                                       |  | $                            | 113,616 |  | $ | 11,394 |  | $ | 64,920 |  | $ | 11,130  |  
|                                                          |  |                         |        |                                            |   |                                              |  |                              |         |  |   |        |  |   |        |  |   |         |  
|Ratio of earnings to fixed charges                        |  |                         | 24.46  |                                            |   | 197.70                                       |  |                              | 245.39  |  |   | 193.12 |  |   | 1.18   |  |   | 0.19    |  
|                                                          |  |                         |        |                                            |   |                                              |  |                              |         |  |   |        |  |   |        |  |   |         |