Exhibit 12.1

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



|                                                      |  |                              |         |                                            |   |                                              |  |                              |        |  |                              |         |                              |  |   |        |  |   |       
|----------------------------------------------------- |  | ---------------------------- | ------- | ------------------------------------------ | - | -------------------------------------------- |  | ---------------------------- | ------ |  | ---------------------------- | ------- | ---------------------------- |  | - | ------ |  | - | ------
|                                                      |  | Predecessor                  |         | Successor                                 
|                                                      |  | Year Ended December 31, 2001 |         | Period from January 1 to February 13, 2002 |   | Period from February 14 to December 31, 2002 |  | Year Ended December 31, 2003 |        |  | Year Ended December 31, 2004 |         | Year Ended December 31, 2005
|Net Income (loss)                                     |  | $                            | 69,258  |                                            | $ | 6,917                                        |  | $                            | 631    |  | $                            | (57,926 | )                            |  | $ | 15,063 |  | $ | 9,804 
|Provision for income taxes                            |  |                              | 43,895  |                                            |   | 4,418                                        |  |                              | 9,320  |  |                              | 10,057  |                              |  |   | 8,729  |  |   | 9,041 
|                                                      |  |                              |         |                                            |   |                                              |  |                              |        |  |                              |         |                              |  |   |        |  |   |       
|Income (loss) before income taxes                     |  | $                            | 113,153 |                                            | $ | 11,335                                       |  | $                            | 9,951  |  | $                            | (47,869 | )                            |  | $ | 23,792 |  | $ | 18,845
|                                                      |  |                              |         |                                            |   |                                              |  |                              |        |  |                              |         |                              |  |   |        |  |   |       
|Fixed charges:                                        |  |                              |         |                                            |   |                                              |  |                              |        |  |                              |         |                              |  |   |        |  |   |       
|Interest expensed                                     |  | $                            |        |                                            | $ |                                             |  | $                            | 45,428 |  | $                            | 46,235  |                              |  | $ | 44,577 |  | $ | 32,406
|Amortization of deferred financing costs and discount |  |                              |        |                                            |   |                                             |  |                              | 8,677  |  |                              | 11,893  |                              |  |   | 8,351  |  |   | 2,241 
|Estimated interest factor on operating leases         |  |                              | 463     |                                            |   | 59                                           |  |                              | 864    |  |                              | 871     |                              |  |   | 1,016  |  |   | 1,010 
|                                                      |  |                              |         |                                            |   |                                              |  |                              |        |  |                              |         |                              |  |   |        |  |   |       
|Total fixed charges                                   |  | $                            | 463     |                                            | $ | 59                                           |  | $                            | 54,969 |  | $                            | 58,999  |                              |  | $ | 53,944 |  | $ | 35,657
|                                                      |  |                              |         |                                            |   |                                              |  |                              |        |  |                              |         |                              |  |   |        |  |   |       
|Earnings:                                             |  |                              |         |                                            |   |                                              |  |                              |        |  |                              |         |                              |  |   |        |  |   |       
|Income (loss) before income taxes                     |  | $                            | 113,153 |                                            | $ | 11,335                                       |  | $                            | 9,951  |  | $                            | (47,869 | )                            |  | $ | 23,792 |  | $ | 18,845
|Fixed charges                                         |  |                              | 463     |                                            |   | 59                                           |  |                              | 54,969 |  |                              | 58,999  |                              |  |   | 53,944 |  |   | 35,657
|                                                      |  |                              |         |                                            |   |                                              |  |                              |        |  |                              |         |                              |  |   |        |  |   |       
|Total earnings                                        |  | $                            | 113,616 |                                            | $ | 11,394                                       |  | $                            | 64,920 |  | $                            | 11,130  |                              |  | $ | 77,736 |  | $ | 54,502
|                                                      |  |                              |         |                                            |   |                                              |  |                              |        |  |                              |         |                              |  |   |        |  |   |       
|Ratio of earnings to fixed charges                    |  |                              | 245.39  |                                            |   | 193.12                                       |  |                              | 1.18   |  |                              | 0.19    |                              |  |   | 1.44   |  |   | 1.53  
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