Answer: mci

AnswerCrossword Clue
MCIFormer telecom co.
MCICaesar's 1101
MCI2006 Verizon purchase
MCICo. acquired by Verizon
MCIVerizon acquisition
MCIVerizon purchase of 2006
MCIPhone company name that looks like a Roman numeral
MCI2006 Verizon acquisition (abbr.)
MCIGTE rival
MCI... WorldCom
MCIPhone service letters
MCIPhone carrier co.
MCIFormer telecom company
MCIBygone telecom co.
MCITelecom letters
MCIATT competitor
MCI12th-century starter
MCIFormer Verizon rival
MCIVerizon acquisition of 2006
MCI1101, in Roman numerals
MCIThe year 1101
MCILong-distance letters
MCISprint rival
MCI1,101 in Roman numerals
MCICall letters?
MCI2005 Verizon acquisition
MCICompany that emerged from Chapter 11 in 2004
MCI1998 merger with WorldCom
MCIFormer telecom firm
MCI2006 Verizon acquisition
MCI.. Center: D.C. arena
MCICalling letters?
MCIOld long-distance letters
MCIEarly 12th century year
MCIVerizon subsidiary
MCI12th century opener
MCIBig name in long distance
MCILong distance giant
MCISprint competitor
MCISBC competitor