The company offered more than 50 services in more than 150 countries that included voice, data, and telex transmissions, MCI Mail, and MCI Fax. [ 25 ] In March 1991, the company introduced the Friends & Family plan, whereby customers received a reduced rate when calling numbers they had included in their "calling circle", which could contain up ...

Welcome to MCI. We offer Residential & Small Business Local and Long Distance, SkyTel Messaging, Prepaid Calling Services, Internet Wholesale, and Telecommunications Wholesale Services.

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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 …

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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.

If you'd rather speak to someone directly, the answers to your questions are just a phone call away. Look for the toll-free Customer Service number you need from the link below. Find A Customer Service Number

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.

Prepaid phone cards with great low rates for Domestic and International calling. MinutePass is convenient: Available in several sizes for all your calls — home and away

WorldCom would emerge from bankruptcy in 2004, rebranding itself as MCI, before being bought by Verizon. Prior to the acquisition, MCI was headquartered in Ashburn, Virginia. The MCI acquisition provided Verizon with an international long-distance network and several large corporate customers.