Exhibit 12.1

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



|                                                      |  |                            |         |                            |   |                            |  |                            |         |  |                            |         |   |  |   |       
|----------------------------------------------------- |  | -------------------------- | ------- | -------------------------- | - | -------------------------- |  | -------------------------- | ------- |  | -------------------------- | ------- | - |  | - | ------
|                                                      |  | Year EndedDecember 31,2009 |         | Year EndedDecember 31,2008 |   | Year EndedDecember 31,2007 |  | Year EndedDecember 31,2006 |         |  | Year EndedDecember 31,2005
|Net Income                                            |  | $                          | 65,677  |                            | $ | 78,464                     |  | $                          | 52,419  |  | $                          | 89,724  |   |  | $ | 9,804 
|Provision for (benefit from) income taxes             |  |                            | 40,465  |                            |   | 46,797                     |  |                            | 31,310  |  |                            | (39,574 | ) |  |   | 9,041 
|                                                      |  |                            |         |                            |   |                            |  |                            |         |  |                            |         |   |  |   |       
|Income (loss) before income taxes                     |  | $                          | 106,142 |                            | $ | 125,261                    |  | $                          | 83,729  |  | $                          | 50,150  |   |  | $ | 18,845
|                                                      |  |                            |         |                            |   |                            |  |                            |         |  |                            |         |   |  |   |       
|Fixed charges:                                        |  |                            |         |                            |   |                            |  |                            |         |  |                            |         |   |  |   |       
|Interest expensed                                     |  | $                          | 27,160  |                            | $ | 35,505                     |  | $                          | 24,429  |  | $                          | 26,194  |   |  | $ | 32,406
|Amortization of deferred financing costs and discount |  |                            | 1,747   |                            |   | 1,742                      |  |                            | 1,174   |  |                            | 1,134   |   |  |   | 2,241 
|Estimated interest factor on operating leases         |  |                            | 1,404   |                            |   | 1,307                      |  |                            | 1,037   |  |                            | 1,006   |   |  |   | 1,010 
|                                                      |  |                            |         |                            |   |                            |  |                            |         |  |                            |         |   |  |   |       
|Total fixed charges                                   |  |                            | 30,291  |                            |   | 38,554                     |  |                            | 26,640  |  |                            | 28,334  |   |  |   | 35,657
|                                                      |  |                            |         |                            |   |                            |  |                            |         |  |                            |         |   |  |   |       
|Earnings:                                             |  |                            |         |                            |   |                            |  |                            |         |  |                            |         |   |  |   |       
|Income (loss) before income taxes                     |  |                            | 106,142 |                            |   | 125,261                    |  |                            | 83,729  |  |                            | 50,150  |   |  |   | 18,845
|Fixed charges                                         |  |                            | 30,291  |                            |   | 38,554                     |  |                            | 26,640  |  |                            | 28,334  |   |  |   | 35,657
|                                                      |  |                            |         |                            |   |                            |  |                            |         |  |                            |         |   |  |   |       
|Total earnings                                        |  | $                          | 136,433 |                            | $ | 163,815                    |  | $                          | 110,369 |  | $                          | 78,484  |   |  | $ | 54,502
|                                                      |  |                            |         |                            |   |                            |  |                            |         |  |                            |         |   |  |   |       
|Ratio of earnings to fixed charges                    |  |                            | 4.50    |                            |   | 4.25                       |  |                            | 4.14    |  |                            | 2.77    |   |  |   | 1.53  
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