<TABLE> <S> <C>

<PAGE>
<ARTICLE> 5
       
<S>                                     <C>                     <C>                     <C>                     <C>
<PERIOD-TYPE>                                     YEAR                   9-MOS                    YEAR                    YEAR
<FISCAL-YEAR-END>                          DEC-31-1996             DEC-31-1996             DEC-31-1997             DEC-31-1998
<PERIOD-START>                             JAN-01-1996             MAR-01-1996             JAN-01-1997             JAN-01-1998
<PERIOD-END>                               DEC-16-1996             DEC-31-1996             DEC-31-1997             DEC-31-1998
<CASH>                                               0                       0                 667,344              25,597,461
<SECURITIES>                                         0                       0               7,371,303                       0
<RECEIVABLES>                                        0                       0               2,096,539              19,570,031
<ALLOWANCES>                                         0                       0                (21,389)             (1,908,811)
<INVENTORY>                                          0                       0                 230,809               6,826,732
<CURRENT-ASSETS>                                     0                       0              10,562,955              73,019,623
<PP&E>                                               0                       0               5,448,183              28,139,460
<DEPRECIATION>                                       0                       0               (610,386)             (4,882,832)
<TOTAL-ASSETS>                                       0                       0              24,922,169             185,655,629
<CURRENT-LIABILITIES>                                0                       0               5,228,728              44,519,887
<BONDS>                                              0                       0               1,933,069             168,267,797
<PREFERRED-MANDATORY>                                0                       0                       0                       0
<PREFERRED>                                          0                       0                       0                       0
<COMMON>                                             0                       0              24,044,297              27,486,554
<OTHER-SE>                                           0                       0             (5,276,567)            (48,835,439)
<TOTAL-LIABILITY-AND-EQUITY>                         0                       0                       0                       0
<SALES>                                              0                  39,387               7,415,247              33,678,089
<TOTAL-REVENUES>                             1,495,977                  97,741              10,210,024              61,600,111
<CGS>                                                0                  38,844               1,325,004              22,650,608
<TOTAL-COSTS>                                1,018,494                  79,459               7,368,509              43,703,183
<OTHER-EXPENSES>                               678,195                 592,790              12,592,134              55,355,398
<LOSS-PROVISION>                                     0                       0                  21,389                 401,451
<INTEREST-EXPENSE>                              20,588                     884                 155,450              17,501,512
<INCOME-PRETAX>                              (221,300)               (575,392)             (9,654,779)            (50,575,984)
<INCOME-TAX>                                         0                       0                       0                       0
<INCOME-CONTINUING>                          (221,300)               (575,392)             (9,654,779)            (50,575,984)
<DISCONTINUED>                                       0                       0                       0                       0
<EXTRAORDINARY>                                      0                       0                       0                       0
<CHANGES>                                            0                       0                       0                       0
<NET-INCOME>                                 (221,300)               (575,392)             (9,654,779)            (50,575,984)
<EPS-PRIMARY>                                        0                  (0.07)                  (0.46)                  (1.84)
<EPS-DILUTED>                                        0                  (0.07)                  (0.46)                  (1.84)
        

</TABLE>