MCI Customer Service Phone Number

Phone Number of MCI is +1 678 259 1449 .
MCI, Inc. is a telecommunication company, based in United States. The company offers IT solutions, data and IP services, wireless and VoIP services. MCI was established on 3 October, 1963. The first president of the company was John D. Goeken. In the early years, the company was named Microwave Communications, Inc. MCI, Inc. is so popular that it became the America's second largest distance services provider in a short span of time. The company in 1998 was acquired by WorldCom and changed its name as MCI WorldCom. In 2000, it adopted the name WorldCom. Due to financial scandals, WorldCom again became MCI Inc. In the year 2006, the Verizon purchased the company. The head office of the company is situated in Ashburn, Virginia.

Features and Services of MCI

MCI is the second largest telecommunication enterprise in United States and is committed to provide the fast and furious telecom services to its customers in terms of mobile network, high speed internet services with 4G LTE network. MCI is the subsidiary of Verizon Communications and its headquarters is located at Ashburn, Virginia. MCI is providing the IT Solutions, data and IP services, VoIP and much more. The MCI enterprise was initially established as a result of the merger of WorldCom and MCI Communications enterprises, and kept the name MCI WorldCom, and later on succeeded by WorldCom. In the MCI enterprise more than thirty thousand qualified and experienced employees are working for the convenience of customers in order to provide them high speed internet and mobile services.

Products of MCI

  • Conferencing
  • Contact Centers
  • Data and IP Services
  • Internet access
  • IT Solutions and Hosting
  • Managed Networks
  • Premises
  • VoIP
  • Equipment (CPE)
  • Voice

Contact Details of MCI

  • Long Distance Customer Service: 1-800-444-3333
  • Local Customer Service: (1-888-624-5622)
  • For English Users: 1-800-955-0925
  • For Spanish Users: 1-800-950-4652
  • Prepaid Calling Services: 1-800-242-7070 / 1-800-540-3598
  • Toll Free Number: 1-800-444-3333
  • World wide access Number: 1-800-955-0925 / 1-800-950-4652
  • Other Contact Numbers: 1-888-624-5622 / 1-800-540-3598

MCI Address

The address of MCI is 22001 Loudoun County Parkway, Ashburn, Virginia, United States.

MCI Website

The Website of MCI is

MCI Customer Support Service Phone Number

The customer support phone number of MCI is +1 678 259 1449 (Click phone number to call).

The postal and official address, email address and phone number (helpline) of MCI Service Center and MCI customer service phone number is given below. The helpline of MCI customer service phone number may or may not be toll free.

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MCI Customer Service Number Delineated Here With Complaints and Reviews

Customer care female
Ms. Ashi Singh CallsDec 12, 2019

Ms. Ashi Singh On Phone To MCI Service
Good afternoon

Would like to inform you that i Ashi Singh and Roll number is 200133773 not received my refund till today and amount is 10, 0000 as the information you will received the money automatically in your account if you not get the admission in any medical collage.

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