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Area Codes > 313 > Central Office Codes

Exchange Rate Center State Operating Company
313-980 DETROITZN5 MI NEW CINGULAR WIRELESS PCS, LLC - IL
313-982 DETROITZN6 MI AMERITECH MICHIGAN
313-983 DETROITZN1 MI AMERITECH MICHIGAN
313-984 DETROITZN5 MI ARCH WIRELESS HOLDINGS, INC.
313-986 DETROITZN5 MI CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI
313-989 DETROITZN1 MI MCI WORLDCOM COMMUNICATIONS, INC. - MI
313-990 DETROITZN5 MI AMERICAN MESSAGING (AM), INC.
313-991 MI
313-992 MI
313-993 DETROITZN1 MI AMERITECH MICHIGAN
313-995 DETROITZN6 MI NEXTEL COMMUNICATIONS, INC.
313-996 DETROITZN6 MI AMERITECH MICHIGAN
313-999 DETROITZN6 MI NEXTEL COMMUNICATIONS, INC.