Exhibit 12.1

Ratio of Earnings to Fixed Charges Syniverse Holdings, Inc. and Predecessor (dollars in thousands)



|                                                      |  |                                         |        |                                           |   |                            |  |   |                            |   |                            |   |                            |  |   |        |  |   |         |  
|----------------------------------------------------- |  | --------------------------------------- | ------ | ----------------------------------------- | - | -------------------------- |  | - | -------------------------- | - | -------------------------- | - | -------------------------- |  | - | ------ |  | - | ------- | -
|                                                      |  | Predecessor                             |        | Successor                                 |  
|                                                      |  | Period fromJanuary 1 toFebruary 13,2002 |        | Period fromFebruary 14 toDecember 31,2002 |   | Year EndedDecember 31,2003 |  |   | Year EndedDecember 31,2004 |   | Year EndedDecember 31,2005 |   | Year EndedDecember 31,2006 | 
|Net Income (loss)                                     |  | $                                       | 6,917  |                                           | $ | 631                        |  | $ | (57,926                    | ) |                            | $ | 15,063                     |  | $ | 9,804  |  | $ | 89,724  |  
|Provision for (benefit from) income taxes             |  |                                         | 4,418  |                                           |   | 9,320                      |  |   | 10,057                     |   |                            |   | 8,729                      |  |   | 9,041  |  |   | (39,574 | )
|                                                      |  |                                         |        |                                           |   |                            |  |   |                            |   |                            |   |                            |  |   |        |  |   |         |  
|Income (loss) before income taxes                     |  | $                                       | 11,335 |                                           | $ | 9,951                      |  | $ | (47,869                    | ) |                            | $ | 23,792                     |  | $ | 18,845 |  | $ | 50,150  |  
|                                                      |  |                                         |        |                                           |   |                            |  |   |                            |   |                            |   |                            |  |   |        |  |   |         |  
|Fixed charges:                                        |  |                                         |        |                                           |   |                            |  |   |                            |   |                            |   |                            |  |   |        |  |   |         |  
|Interest expensed                                     |  | $                                       |       |                                           | $ | 45,428                     |  | $ | 46,235                     |   |                            | $ | 44,577                     |  | $ | 32,406 |  | $ | 26,788  |  
|Amortization of deferred financing costs and discount |  |                                         |       |                                           |   | 8,677                      |  |   | 11,893                     |   |                            |   | 8,351                      |  |   | 2,241  |  |   | 540     |  
|Estimated interest factor on operating leases         |  |                                         | 59     |                                           |   | 864                        |  |   | 871                        |   |                            |   | 1,016                      |  |   | 1,010  |  |   | 1,006   |  
|                                                      |  |                                         |        |                                           |   |                            |  |   |                            |   |                            |   |                            |  |   |        |  |   |         |  
|Total fixed charges                                   |  | $                                       | 59     |                                           | $ | 54,969                     |  | $ | 58,999                     |   |                            | $ | 53,944                     |  | $ | 35,657 |  | $ | 28,334  |  
|                                                      |  |                                         |        |                                           |   |                            |  |   |                            |   |                            |   |                            |  |   |        |  |   |         |  
|Earnings:                                             |  |                                         |        |                                           |   |                            |  |   |                            |   |                            |   |                            |  |   |        |  |   |         |  
|Income (loss) before income taxes                     |  |                                         | 11,335 |                                           |   | 9,951                      |  |   | (47,869                    | ) |                            |   | 23,792                     |  |   | 18,845 |  |   | 50,150  |  
|Fixed charges                                         |  |                                         | 59     |                                           |   | 54,969                     |  |   | 58,999                     |   |                            |   | 53,944                     |  |   | 35,657 |  |   | 28,334  |  
|                                                      |  |                                         |        |                                           |   |                            |  |   |                            |   |                            |   |                            |  |   |        |  |   |         |  
|Total earnings                                        |  | $                                       | 11,394 |                                           | $ | 64,920                     |  | $ | 11,130                     |   |                            | $ | 77,736                     |  | $ | 54,502 |  | $ | 78,484  |  
|                                                      |  |                                         |        |                                           |   |                            |  |   |                            |   |                            |   |                            |  |   |        |  |   |         |  
|Ratio of earnings to fixed charges                    |  |                                         | 193.12 |                                           |   | 1.18                       |  |   | 0.19                       |   |                            |   | 1.44                       |  |   | 1.53   |  |   | 2.77    |  
|                                                      |  |                                         |        |                                           |   |                            |  |   |                            |   |                            |   |                            |  |   |        |  |   |         |