Level 3 Communications makes valuable connections through its networking efforts -- and without a name tag. Operator of one of the world's largest fiber-optic communications networks, the firm connects customers in 60 countries. Its services include broadband Internet access, wholesale voice origination and termination, enterprise voice, content distribution, broadband transport, and colocation services. Wholesale customers include ISPs, telecom carriers, cable-TV operators, wireless providers, and the US government. The company markets its products and services directly to businesses, government agencies, and schools. Its content delivery unit targets video distributors, Web portals, online gaming and software companies, and social networking sites.