4. Verizon Communications Services
2009 Revenue: $24 billion
Verizon continues to fare well, with revenue increasing. Its wireless segment saw subscribers increase by 4.4 percent. Verizon’s other business segment, Wireline, provides customers with communication services. It also provides next-generation IP network services and communications solutions to midsize and large businesses and government customers.
Virginia Ruesterholz is president of Verizon Telecom.