San Antonio (CA) - Communications giant AT&T announced this week that it won key "B Block" spectrum in the government’s auction for 700 MHz airwaves.

The Federal Communications Commission auction was important for AT&T, as it said that its acquisition has given it enough capacity to offer next generation mobile broadband features.

According to the company, the added spectrum brings it to 87% coverage of the entire country, including 100% coverage of the top 200 markets in the US.

Financial results of the auction were not disclosed, but the B Block was expected to be the most sought-after spectrum.

"Results of the auction bidding demonstrate the B Block was the most attractive, most valuable spectrum available, and it was the best investment for AT&T and our customers," said AT&T wireless CEO Ralph de la Vega.

AT&T said the results of the auction would allow it to be the first to open up 4G mobile functionality in the US.