AT&T Mobility, LLC is a subsidiary of AT&T, Inc. It is also known as AT&T Wireless and provides wireless service in the US, although not in Puerto Rico or the US Virgin Islands.
GTT Communications, Inc., formerly called Global Telecom and Technology, is a multinational company that offers telecommunications and Internet service.
Cellco Partnership, Inc., commonly known as Verizon Wireless, is the second-largest wireless carrier in the US, offering a 4G LTE network. It is a division of Verizon Communications.
Zoom Telephonics, Inc. designs, makes, and supports communications equipment, primarily for Internet access and wifi and primarily modems, through retailers such as Amazon, Best Buy, Target, and Walmart.
Ecommerce National, LLC, which does business as TollFreeDeals.com, is telecommunications company acting as a gateway carrier for overseas call centers.
Appa, Inc. is a telecommunications company with a specialty in international calling.
Southern California Telephone Company provides residential and commercial services, in both traditional connectivity and IP telecom services.
Uniti Group Inc. is a real estate investment trust that acquires and constructs critical communications infrastructure and provides wireless infrastructure for the communications industry.
Nutronix Revolution, Inc., which does business as a NXR Global, sells subscription TV and streaming services based on a monthly fee.
Altice USA, Inc. offers cable television and other services, including broadband, pay TV, telephone, wifi hotspot access, proprietary contant and advertising. It has approximately 4.9 million customers in 21 states.