MCI Inc.
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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.
Welcome to MCI. We offer Residential & Small Business Local and Long Distance, SkyTel Messaging, Prepaid Calling Services, Internet Wholesale, and Telecommunications Wholesale Services.
Customer Service. We're here to help. Browse our information resources, e-mail or call to speak to a Customer Service representative with any comments or questions. Online Account Manager gives you secure access to your account when it's convenient for you, 24 hours a day, 7 days a week.
Global business and residential communications company operating in more than 65 countries.
MCI, Inc. (formerly WorldCom and MCI WorldCom) was a telecommunications company. For a time, it was the second-largest long-distance telephone company in the United States , after AT&T .
MCI offers customer support for all your service needs. You may contact our representatives by phone or e-mail using the information below. If you are a current MCI Consumer customer, you can log in to our secure customer website to access your account information or e-mail Customer Service. Log in to Online Account Manager
Contact MCI If you are a current MCI Consumer customer and you have a specific question about your account or need to make account updates, you must log in to our secure customer website to e-mail Customer Service. You'll receive an answer to your question within 24 business hours. Log in to Online Account Manager
First-time user? Click below to set up a username and password to access your account. It's quick and easy! Click below for help with your username or password. Having Trouble Logging In? If you are a Residential Customer, call 1-800-444-3333. If you are a Business Customer, call 1-800-444-2222.
MCI has a calling plan or package that meets your needs — and gives you more calling for your money. Save on state-to-state calls. Pay $6.99 a month and get 4¢ a minute on state-to-state long distance calls from home all day, every day when you sign a 12 month term contract.
Verizon About WorldCom WorldCom was a leading communications company that was acquired by Verizon Communications in January 2006. Known as MCI at the time of the merger, WorldCom’s network assets are now part of Verizon Enterprise Solutions. WorldCom was originally founded in 1983 as Long Distance Discount Service, Inc.