Exhibit 12.1



Ratio of Earnings to Fixed Charges

Syniverse Holdings, Inc. and Predecessor

(dollars in thousands)



|                                                      |  |                            |        |                            |   |                                         |  |                                           |        |                            |   |        |                            |   |         |   |  |   |       
|----------------------------------------------------- |  | -------------------------- | ------ | -------------------------- | - | --------------------------------------- |  | ----------------------------------------- | ------ | -------------------------- | - | ------ | -------------------------- | - | ------- | - |  | - | ------
|                                                      |  | Predecessor                |        | Successor                 
|                                                      |  | Year EndedDecember 31,2000 |        | Year EndedDecember 31,2001 |   | Period fromJanuary 1 toFebruary 13,2002 |  | Period fromFebruary 14 toDecember 31,2002 |        | Year EndedDecember 31,2003 |   |        | Year EndedDecember 31,2004
|Net income                                            |  | $                          | 51,051 |                            | $ | 69,258                                  |  | $                                         | 6,917  |                            | $ | 631    |                            | $ | (57,926 | ) |  | $ | 15,063
|Provision for income taxes                            |  |                            | 32,548 |                            |   | 43,895                                  |  |                                           | 4,418  |                            |   | 9,320  |                            |   | 10,057  |   |  |   | 8,729 
|                                                      |  |                            |        |                            |   |                                         |  |                                           |        |                            |   |        |                            |   |         |   |  |   |       
|Income (loss) before income taxes                     |  | $                          | 83,599 |                            | $ | 113,153                                 |  | $                                         | 11,335 |                            | $ | 9,951  |                            | $ | (47,869 | ) |  | $ | 23,792
|                                                      |  |                            |        |                            |   |                                         |  |                                           |        |                            |   |        |                            |   |         |   |  |   |       
|Fixed charges:                                        |  |                            |        |                            |   |                                         |  |                                           |        |                            |   |        |                            |   |         |   |  |   |       
|Interest expensed net of amounts capitalized          |  | $                          | 22     |                            | $ |                                        |  | $                                         |       |                            | $ | 45,428 |                            | $ | 46,235  |   |  | $ | 44,577
|Amortization of deferred financing costs and discount |  |                            |       |                            |   |                                        |  |                                           |       |                            |   | 8,677  |                            |   | 11,893  |   |  |   | 8,351 
|Estimated interest factor on operating leases         |  |                            | 403    |                            |   | 463                                     |  |                                           | 59     |                            |   | 864    |                            |   | 871     |   |  |   | 1,016 
|                                                      |  |                            |        |                            |   |                                         |  |                                           |        |                            |   |        |                            |   |         |   |  |   |       
|Total fixed charges                                   |  | $                          | 425    |                            | $ | 463                                     |  | $                                         | 59     |                            | $ | 54,969 |                            | $ | 58,999  |   |  | $ | 53,944
|                                                      |  |                            |        |                            |   |                                         |  |                                           |        |                            |   |        |                            |   |         |   |  |   |       
|Earnings:                                             |  |                            |        |                            |   |                                         |  |                                           |        |                            |   |        |                            |   |         |   |  |   |       
|Income before income taxes                            |  | $                          | 83,599 |                            | $ | 113,153                                 |  | $                                         | 11,335 |                            | $ | 9,951  |                            | $ | (47,869 | ) |  | $ | 23,792
|Fixed charges                                         |  |                            | 425    |                            |   | 463                                     |  |                                           | 59     |                            |   | 54,969 |                            |   | 58,999  |   |  |   | 53,944
|                                                      |  |                            |        |                            |   |                                         |  |                                           |        |                            |   |        |                            |   |         |   |  |   |       
|Total earnings                                        |  | $                          | 84,024 |                            | $ | 113,616                                 |  | $                                         | 11,394 |                            | $ | 64,920 |                            | $ | 11,130  |   |  | $ | 77,736
|                                                      |  |                            |        |                            |   |                                         |  |                                           |        |                            |   |        |                            |   |         |   |  |   |       
|Ratio of earnings to fixed charges                    |  |                            | 197.70 |                            |   | 245.39                                  |  |                                           | 193.12 |                            |   | 1.18   |                            |   | 0.19    |   |  |   | 1.44  
|                                                      |  |                            |        |                            |   |                                         |  |                                           |        |                            |   |        |                            |   |         |   |  |   |