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https://craft.co/mci-communications-corporation
MCI Communications headquarters is located at 1801 Pennsylvania Avenue NW, Washington. Where are MCI Communications offices? …
https://www.dnb.com/business-directory/company-profiles.mci_communications_corporation.930a7156a7f25af14a4461908eb40eb1.html
MCI Communications Corporation's headquarters is located at 22001 Loudoun County Pkwy Ashburn, VA, 20147-6122 United States. What is MCI Communications Corporation's industry? MCI Communications Corporation is in the industry of Other Telecommunications.
Global business and residential communications company operating in more than 65 countries.
https://en.wikipedia.org/wiki/MCI_Communications
MCI Communications Corp. was a telecommunications company headquartered in Washington, D.C. that was at one point the second-largest long-distance provider in the United States. MCI was instrumental in legal and regulatory changes that led to the breakup of the monopoly of AT&T Corporation and introduced competition in the telephone industry. Its MCI Mail, launched in …
https://www.dnb.com/business-directory/company-profiles.mci_communications_services_llc.b2f1e286bcc31e8c4deaa014339b5ccb.html
Company Description: MCI Communications Services LLC is located in Knoxville, TN, United States and is part of the Other Telecommunications Industry. MCI Communications Services LLC has 67 employees at this location. (Employees figure is modelled). There are 7,882 companies in the MCI Communications Services LLC corporate family. Industry: Other Telecommunications …
http://consumer.mci.com/customer_service/Service_Numbers.jsp
1-888-MCI-LOCAL (1-888-624-5622) www.mci.com/service www.mci.com/service: Former TTI National customers 1-800-893-5094 www.mci.com: Other Numbers Prepaid Calling Services 10-10-987 10-10-220 10-10-321 1-800-242-7070 1-800-540-3598 1-800-921-0089 www.minutepass.com www.1010987.com www.1010220.com www.1010321.com
https://en.wikipedia.org/wiki/MCI_Inc.
On April 14, 2003, WorldCom changed its name to MCI, and relocated its corporate headquarters from Clinton, Mississippi, to Ashburn, Virginia. Even before then, however, employees from the MCI side of the merger had taken over top executive posts, while many longtime executives from the old WorldCom were pushed out.
https://www.bloomberg.com/profile/company/0124540D:US
MCI Communications Services, Inc., doing business as Verizon Business Services, provides wireless services. The Company offers long-distance, …
https://www.bbb.org/us/va/ashburn/profile/telephones/mci-inc-0241-11839
MCI's headquarters is in Ashburn, Virginia. Verizon is headquartered in New York, NY. According to information provided by the company, MCI Communications Corporation (MCC) was incorporated in...
https://www.bloomberg.com/profile/company/0598884D:US
Company profile page for MCI Communications Corp including stock price, company news, press releases, executives, board members, and contact information
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