Justice Department spokeswoman Gina Talamona confirmed Tuesday that the department was looking into the proposed deal, but she declined to comment further.
Consumer advocate Mark Cooper, director of research at the Consumer Federation of America, said that the deal brings together two competitors in a joint venture - Verizon Communications and Comcast - and that a concern for regulators should be whether that impedes competition in markets such as Philadelphia. Comcast's Xfinity TV and Internet competes directly with Verizon's FiOS TV and Internet here.
Verizon Wireless, the nation's largest wireless provider - it added 1.2 million new subscribers in the fourth quarter, according to the company's earnings release Tuesday - is 55 percent owned by Verizon Communications and 45 percent by England's Vodafone Group. Comcast officials have said Verizon Wireless is effectively a separate company from Verizon Communications, with its own board of directors.
Paul Macchia, spokesman for Verizon Wireless, declined to name the members of the Verizon Wireless board, saying it wasn't public information. A 2003 news release said the Verizon Wireless board at that time comprised five members from Verizon Communications and four from Vodafone.
In a filing with the FCC, the companies said the marketing agreements "have no bearing on whether the spectrum sale is in the public interest, do not require Commission approval, and, for several reasons, do not need to be part of the formal recording in this procedure." They are making available redacted copies of the agreements to the FCC for confidential review.
Comcast owns 63 percent of the wireless venture selling the spectrum to Verizon Wireless. The spectrum consists of 122 licenses with 20 to 30 megahertz of capacity, covering a geographic area in the United States with 260 million people.