MCI, Inc. (
d/b/a Verizon Business) was an American
telecommunication corporation, currently a subsidiary of
Verizon Communications, with its main office in
Ashburn, Virginia. The corporation was formed originally as a result of the merger of
WorldCom and
MCI Communications corporations, and used the name
MCI WorldCom, succeeded by
WorldCom, before changing its name to the present version on April 12, 2003, as part of the corporation's ending of its bankruptcy status. The company traded on
NASDAQ as WCOM (pre-bankruptcy) and MCIP (post-bankruptcy). The corporation was purchased by Verizon Communications with the deal finalizing on January 6, 2006, and is now identified as that company's
Verizon Enterprise Solutions division with the local residential divisions being integrated slowly into local Verizon subsidiaries.