The New Yorker has a long article about Amazon. Toward the beginning, it says, "A.T. & T. doesn't build transmission towers and rent them to smaller phone companies, the way Amazon Web Services provides server infrastructure for startups (not to mention the C.I.A.)"
From the ATT form 10K: "We provide local, interstate and international wholesale networking capacity to other service providers. We offer a combination of high−volume transmission capacity and conventional dedicated line services on a regional, national and international basis to wireless carriers, interexchange carriers, Internet service providers (ISPs) and facility−based and switchless resellers. Our wholesale customers are primarily large ISPs, wireless carriers, competitive local exchange carriers (CLECs), regional phone companies, interexchange carriers, cable companies and systems integrators. We also have sold dedicated network capacity through indefeasible rights−of−use agreements under which capacity is furnished for contract terms as long as 25 years."
Leap/Cricket, for example, runs largely on the ATT network.
How that one got through the New Yorker's vaunted fact-checking operation is a mystery. It will be interesting to see if the magazine corrects the error.