<TABLE> <S> <C>

<PAGE>
<ARTICLE> 5
<MULTIPLIER> 1,000

<S>                             <C>                     <C>                     <C>
<PERIOD-TYPE>                   YEAR                   YEAR                   YEAR
<FISCAL-YEAR-END>                          DEC-31-1997             DEC-31-1998             DEC-31-1999
<PERIOD-START>                             JAN-01-1997             JAN-01-1998             JAN-01-1999
<PERIOD-END>                               DEC-31-1997             DEC-31-1998             DEC-31-1999
<CASH>                                               0                  25,597                  25,215
<SECURITIES>                                         0                       0                  34,742
<RECEIVABLES>                                        0                  19,570                  40,290
<ALLOWANCES>                                         0                 (1,909)                 (2,512)
<INVENTORY>                                          0                   6,827                  13,810
<CURRENT-ASSETS>                                     0                  73,019                 141,415
<PP&E>                                               0                  28,139                  77,455
<DEPRECIATION>                                       0                 (4,883)                (15,292)
<TOTAL-ASSETS>                                       0                 185,655                 295,213
<CURRENT-LIABILITIES>                                0                  44,519                  64,440
<BONDS>                                              0                 168,268                 205,474
<PREFERRED-MANDATORY>                                0                       0                       0
<PREFERRED>                                          0                       0                       0
<COMMON>                                             0                  27,487                 196,937
<OTHER-SE>                                           0                (48,836)               (160,317)
<TOTAL-LIABILITY-AND-EQUITY>                         0                 185,655                 295,213
<SALES>                                          7,415                  33,678                  96,374
<TOTAL-REVENUES>                                10,210                  61,600                 159,922
<CGS>                                            1,325                  22,651                  70,498
<TOTAL-COSTS>                                    7,369                  43,703                 104,045
<OTHER-EXPENSES>                                12,592                  55,356                 143,295
<LOSS-PROVISION>                                    21                     401                   3,154
<INTEREST-EXPENSE>                                 156                  17,502                  26,491
<INCOME-PRETAX>                                (9,655)                (50,576)               (108,260)
<INCOME-TAX>                                         0                       0                       0
<INCOME-CONTINUING>                            (9,655)                (50,576)               (108,260)
<DISCONTINUED>                                       0                       0                       0
<EXTRAORDINARY>                                      0                       0                       0
<CHANGES>                                            0                       0                       0
<NET-INCOME>                                   (9,655)                (50,576)               (108,260)
<EPS-BASIC>                                     (0.92)                  (3.68)                  (5.32)
<EPS-DILUTED>                                   (0.92)                  (3.68)                  (5.32)



</TABLE>