
MCI Communications
Former telecommunications and networking company / From Wikipedia, the free encyclopedia
Dear Wikiwand AI, let's keep it short by simply answering these key questions:
Can you list the top facts and stats about MCI Communications?
Summarize this article for a 10 years old
SHOW ALL QUESTIONS
MCI Communications Corp. (originally Microwave Communications, Inc.) was a telecommunications company headquartered in Washington, D.C. that was at one point the second-largest long-distance provider in the United States.
Former telecommunications and networking company
![]() | |
Industry | Telecommunications |
---|---|
Founded | October 3, 1963; 59 years ago (1963-10-03) |
Fate | Acquired by Worldcom in 1998 |
Successor | MCI WorldCom |
Headquarters | Washington, D.C., U.S. |
Products | Conferencing, Contact Centers, Data and IP Services, Internet access, IT Solutions and Hosting, Managed Networks, Premises Equipment (CPE), Security, Voice, VoIP, Wireless |

MCI was instrumental in legal and regulatory changes that led to the breakup of the Bell System and introduced competition in the telephone industry.[1] Its MCI Mail, launched in 1983, was one of the first Email services and its MCI.net was an integral part of the Internet backbone.
The company was acquired by WorldCom (later called MCI Inc.) in 1998.