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630230xxx Exchanges for IL

Exchange Circuit Company Zip Code
6302301xxxLandlineLevel 3 Communications, LLC - IL60521
6302302xxxLandlineCimco Communications, Inc. - IL60521
6302303xxxLandlineXO Illinois, Inc.60521
6302304xxxLandlineXO Illinois, Inc.60521
6302305xxxLandlineXO Illinois, Inc.60521
6302306xxxLandlineBroadwing Level 3 - IL60521
6302307xxxLandlineY-MAX Communications Corp. - IL60521
6302308xxxLandlineLevel 3 Communications, LLC - IL60521