BellSouth says what it calls a "thorough review" found no indication it gave customer records to the National Security Agency.
USA Today reported last week that BellSouth, AT&T and Verizon complied with an NSA request for several million phone records after 9-11.
BellSouth says there was no such contract with the NSA.
A spokesman says the company is confident that it didn't turn over any records to the government.
And he says the review didn't turn up anyone at BellSouth who had ever been approached by the NSA.
USA Today says it contacted BellSouth the day before it published its initial story last week, and it says the company did not challenge the newspaper's account of the NSA database program.