MCI Customer Service Contact Helpline

Communication is can be simply defined as transferring of messages effectively from one to another. Telecommunication is the most preferable way of transferring messages in this era. MCI Inc is one such private sector based organization which is aimed to assure the better way of messaging to the needed ones .MCI INC, an American telecommunication corporation headquartered in Virginia, which is a well growing business group organized by Verizon communications. Initially the organization MCI is a joint venture of WorldCom and MCI Corporations, which is now fully owned by  Verizon Communications from the date January 6 2006. Here is the wide listing of MCI Inc contact information of customer support and mailing address.

MCI Head office address/ Phone Number/email

MCI Inc corporate office Address


MCI Corporate office email address


Regulatory Rep of MCI INC

Mci Communications Services Inc, Dulaney Oroak

General Counsel, 5055 North Point Parkway
8th Floor
Alpharetta,Ga 30022

Email address                    

Toll free Number                         800-937-6000

Mci Inc Company address         Mci Communications Services Inc
Dulaney Oroark
Asst General Counsel, One Verizon Place
Alpharetta,Ga 30004

Phone Number                             678-339-5081

MCI authorized Representative address Mci Communications Services Inc
Gregg Diamond
Senior Consultant – State Government Relations
600 Hidden Ridge, Irving,Tx 75038

Email address            

MCI INC customer complaint mailing address      Mci Communications Inc, Rick Greiner
Acting Supervisor, 500 2nd Avenue
Cedar Rapids,Ia 52401

MCI INC complains email support          ;

Phone Number                                              319-892-2047

Mci  inc Toll free Number for General complaints        800-624-0533

Mci Inc Telecommunication Toll free support number

Sl no Service Toll free extension Website
1 Long Distance Customer Service 1-800-444-3333
2 Worldwide Access Numbers






3 Prepaid Calling Services 1-800-540-3598


Visit MCI Inc Official website For further queries





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