| StockExchange | name | official name | predecessor | chief executive officer | chairperson | logo | equity | assets | net profit | operating income | image | date founded | Employees | country of origin | city Headquarters | administrative division Headquarters | country Headquarters | continent Headquarters | Market capitalization | Parent | Products | Revenue | date dissolved | Website |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| AT&T Technologies | Western Electric | Website | ||||||||||||||||||||||
| AT&T Labs | AT&T Laboratories |  | 1988 | Austin, Texas | Texas | United States | Americas | Website | ||||||||||||||||
| Frontier Communications of Virginia | C&P Telephone | 2009 | Frontier Communications | Local Telephone Service [Telephone] | Website | |||||||||||||||||||
| AirTouch | Pacific Telesis | 1994 | San Francisco | California | United States | Americas | Cellular Telephone Service [Mobile_phone], Paging [Pager] | Website | ||||||||||||||||
| Ameritech | Pacific Telesis | 1983 | Chicago | Illinois | United States | Americas | AT&T Corporation | Telephone [Telephone], Internet [Internet], Television [Television] | Website |