WASHINGTON — The Obama administration is secretly carrying out a domestic surveillance program under which it is collecting business communications records involving Americans under a hotly debated section of the Patriot Act, according to a highly classified court order disclosed on Wednesday night.

The order, signed by Judge Roger Vinson of the Foreign Intelligence Surveillance Court in April, directs a Verizon Communications subsidiary, Verizon Business Network Services, to turn over “on an ongoing daily basis” to the National Security Agency all call logs “between the United States and abroad” or “wholly within the United States, including local telephone calls.”

The order does not apply to the content of the communications.

Verizon Business Network Services is one of the nation’s largest telecommunications and Internet providers for corporations. It is not clear whether similar orders have gone to other parts of Verizon, like its residential or cellphone services, or to other telecommunications carriers. The order prohibits its recipient from discussing its existence, and representatives of both Verizon and AT&T declined to comment Wednesday evening.

The four-page order was disclosed Wednesday evening by the newspaper The Guardian. Obama administration officials at the F.B.I. and the White House also declined to comment on it Wednesday evening, but did not deny the report, and a person familiar with the order confirmed its authenticity. “We will respond as soon as we can,” said Marci Green Miller, a National Security Agency spokeswoman, in an e-mail.