<TABLE> <S> <C>
<PAGE>
<ARTICLE> 5
<LEGEND>
THIS FINANCIAL DATA SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED
FROM THE UNAUDITED, CONSOLIDATED BALANCE SHEET OF ITC/\DELTACOM, INC. AS OF JUNE
30, 2000 AND THE RELATED UNAUDITED, CONSOLIDATED STATEMENT OF OPERATIONS FOR THE
SIX MONTHS ENDED JUNE 30, 2000. THIS INFORMATION, IN THOUSANDS, IS QUALIFIED IN
ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> DEC-31-2000
<PERIOD-START> JAN-01-2000
<PERIOD-END> JUN-30-2000
<CASH> 270,930
<SECURITIES> 0
<RECEIVABLES> 76,789
<ALLOWANCES> 2,577
<INVENTORY> 9,382
<CURRENT-ASSETS> 358,270
<PP&E> 629,833
<DEPRECIATION> 138,526
<TOTAL-ASSETS> 981,832
<CURRENT-LIABILITIES> 90,443
<BONDS> 514,877
0
15
<COMMON> 613
<OTHER-SE> 354,762
<TOTAL-LIABILITY-AND-EQUITY> 981,832
<SALES> 162,118
<TOTAL-REVENUES> 162,118
<CGS> 72,555
<TOTAL-COSTS> 176,820
<OTHER-EXPENSES> (2)
<LOSS-PROVISION> 1,384
<INTEREST-EXPENSE> 26,579
<INCOME-PRETAX> (32,884)
<INCOME-TAX> 0
<INCOME-CONTINUING> (32,884)
<DISCONTINUED> 0
<EXTRAORDINARY> (1,321)
<CHANGES> 0
<NET-INCOME> (34,205)
<EPS-BASIC> (.57)
<EPS-DILUTED> (.57)
</TABLE>