What is my phone company?

Before the 1956 break-up that restricted the boundaries of the Bell System, the Bell System also included the Northern Electric subsidiary of Western Electric, the Bell Canada regional operating company, and various Caribbean regional operating companies, as well as 54% ownership of NEC and a post-WW II re-construction relationship with NTT. Before 1956, the Bell System's reach was truly gargantuan, as the list below of now-divested formerly-held corporations indicates. Even during the period from 1956 to 1984, the Bell System's dominant reach into all forms of communications was pervasive within the United States and influential in telecommunication standardization throughout the industrialized world.