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508452xxx Exchanges for MA

Exchange Circuit Company Zip Code
5084525xxxLandlineLevel 3 Communications, LLC - MA02048
5084526xxxLandlineInfotelecom, LLC - MA02048
5084527xxxLandlineXO Massachusetts, Inc.02048
5084528xxxLandlineXO Massachusetts, Inc.02048
5084529xxxLandlineXO Massachusetts, Inc.02048