| Exchange | 
      Rate Center | 
      State | 
      Operating Company | 
    
      
        | 440-439  | 
        BEDFORD | 
        OH | 
        AMERITECH OHIO | 
      
      
        | 440-440  | 
         | 
        OH | 
         | 
      
      
        | 440-442  | 
        HILLCREST | 
        OH | 
        AMERITECH OHIO | 
      
      
        | 440-443  | 
        HILLCREST | 
        OH | 
        FIRST COMMUNICATIONS LLC DBA CORECOMM - OH | 
      
      
        | 440-445  | 
        MENTOR | 
        OH | 
        XO OHIO, INC. | 
      
      
        | 440-446  | 
        HILLCREST | 
        OH | 
        AMERITECH OHIO | 
      
      
        | 440-447  | 
        BRECKSVL | 
        OH | 
        LEVEL 3 COMMUNICATIONS, LLC - OH | 
      
      
        | 440-448  | 
        GATESMILLS | 
        OH | 
        ICG TELECOM GROUP - OH | 
      
      
        | 440-449  | 
        HILLCREST | 
        OH | 
        AMERITECH OHIO | 
      
      
        | 440-452  | 
        ELYRIA | 
        OH | 
        SPRINT SPECTRUM L.P. | 
      
      
        | 440-453  | 
        ELYRIA | 
        OH | 
        SPRINT SPECTRUM L.P. | 
      
      
        | 440-454  | 
        OLMSTEDFLS | 
        OH | 
        T-MOBILE USA, INC. | 
      
      
        | 440-456  | 
        HILLCREST | 
        OH | 
        AMERITECH OHIO | 
      
      
        | 440-457  | 
        NOROYALTON | 
        OH | 
        MCIMETRO, ATS, INC. | 
      
      
        | 440-458  | 
        ELYRIA | 
        OH | 
        WINDSTREAM OHIO, INC. | 
      
      
        | 440-460  | 
        HILLCREST | 
        OH | 
        AMERITECH OHIO | 
      
      
        | 440-461  | 
        HILLCREST | 
        OH | 
        AMERITECH OHIO | 
      
      
        | 440-463  | 
        WILLOUGHBY | 
        OH | 
        NEW CINGULAR WIRELESS PCS, LLC - IL | 
      
      
        | 440-465  | 
        CLEVELAND | 
        OH | 
        CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH | 
      
      
        | 440-466  | 
        GENEVA | 
        OH | 
        WINDSTREAM WESTERN RESERVE, INC. | 
      
      
        | 440-471  | 
        TRINITY | 
        OH | 
        GLOBAL CROSSING LOCAL SERVICES, INC.-OH | 
      
      
        | 440-473  | 
        HILLCREST | 
        OH | 
        AMERITECH OHIO | 
      
      
        | 440-474  | 
        TRUMBULL | 
        OH | 
        WINDSTREAM WESTERN RESERVE, INC. | 
      
      
        | 440-476  | 
        CLEVELAND | 
        OH | 
        CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH | 
      
      
        | 440-477  | 
        WILLOUGHBY | 
        OH | 
        CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH | 
      
      
        | 440-478  | 
        WILLOUGHBY | 
        OH | 
        CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH | 
      
      
        | 440-479  | 
        WILLOUGHBY | 
        OH | 
        CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH | 
      
      
        | 440-483  | 
        HILLCREST | 
        OH | 
        AMERITECH OHIO | 
      
      
        | 440-484  | 
        HILLCREST | 
        OH | 
        ICG TELECOM GROUP - OH | 
      
      
        | 440-486  | 
         | 
        OH | 
         | 
      
      
        | 440-487  | 
        WILLOUGHBY | 
        OH | 
        CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH | 
      
      
        | 440-488  | 
        WILLOUGHBY | 
        OH | 
        CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH | 
      
      
        | 440-489  | 
        TRINITY | 
        OH | 
        AMERICAN MESSAGING (AM), INC. | 
      
      
        | 440-490  | 
        CHESTERLD | 
        OH | 
        TELEPORT COMMUNICATIONS GROUP, INC. - OH | 
      
      
        | 440-492  | 
        BURTON | 
        OH | 
        AMERICAN MESSAGING (AM), INC. | 
      
      
        | 440-493  | 
        WILLOUGHBY | 
        OH | 
        AMERICAN MESSAGING (AM), INC. | 
      
      
        | 440-494  | 
        WICKLIFFE | 
        OH | 
        TELEPORT COMMUNICATIONS GROUP, INC. - OH | 
      
      
        | 440-497  | 
        WILLOUGHBY | 
        OH | 
        TELEPORT COMMUNICATIONS GROUP, INC. - OH | 
      
      
        | 440-498  | 
        CHAGRINFLS | 
        OH | 
        AMERITECH OHIO | 
      
      
        | 440-499  | 
        VICTORY | 
        OH | 
        GLOBAL CROSSING LOCAL SERVICES, INC.-OH | 
      
      
        | 440-500  | 
         | 
        OH | 
         | 
      
      
        | 440-503  | 
        BEREA | 
        OH | 
        SPRINT SPECTRUM L.P. | 
      
      
        | 440-505  | 
        CHAGRINFLS | 
        OH | 
        XO OHIO, INC. | 
      
      
        | 440-506  | 
        ELYRIA | 
        OH | 
        T-MOBILE USA, INC. | 
      
      
        | 440-507  | 
        WILLOUGHBY | 
        OH | 
        ARCH WIRELESS HOLDINGS, INC. | 
      
      
        | 440-508  | 
        OLMSTEDFLS | 
        OH | 
        MCIMETRO, ATS, INC. | 
      
      
        | 440-510  | 
        WILLOUGHBY | 
        OH | 
        ALLEGIANCE TELECOM, INC. - OH | 
      
      
        | 440-511  | 
         | 
        OH | 
         | 
      
      
        | 440-512  | 
        BEREA | 
        OH | 
        MCIMETRO, ATS, INC. | 
      
      
        | 440-516  | 
        WICKLIFFE | 
        OH | 
        AMERITECH OHIO | 
      
      
        | 440-519  | 
        CHAGRINFLS | 
        OH | 
        AMERITECH OHIO | 
      
      
        | 440-520  | 
        WILLOUGHBY | 
        OH | 
        NEW CINGULAR WIRELESS PCS, LLC - IL | 
      
      
        | 440-521  | 
        WILLOUGHBY | 
        OH | 
        CLEVELAND UNLIMITED, INC. | 
      
      
        | 440-522  | 
        LORAIN | 
        OH | 
        NEW CINGULAR WIRELESS PCS, LLC - IL | 
      
      
        | 440-523  | 
        CLEVELAND | 
        OH | 
        ALLTEL COMMUNICATIONS, INC. - OH | 
      
      
        | 440-524  | 
         | 
        OH | 
         | 
      
      
        | 440-525  | 
        WILLOUGHBY | 
        OH | 
        MCIMETRO, ATS, INC. | 
      
      
        | 440-526  | 
        BRECKSVL | 
        OH | 
        AMERITECH OHIO | 
      
      
        | 440-527  | 
        WILLOUGHBY | 
        OH | 
        BROADWING COMMUNICATIONS, LLC - OH | 
      
      
        | 440-528  | 
        CHAGRINFLS | 
        OH | 
        FIRST COMMUNICATIONS LLC DBA CORECOMM - OH | 
      
      
        | 440-530  | 
        WILLOUGHBY | 
        OH | 
        TELEPORT COMMUNICATIONS GROUP, INC. - OH | 
      
      
        | 440-531  | 
         | 
        OH | 
         | 
      
      
        | 440-532  | 
        BEREA | 
        OH | 
        T-MOBILE USA, INC. | 
      
      
        | 440-533  | 
        GATESMILLS | 
        OH | 
        T-MOBILE USA, INC. | 
      
      
        | 440-534  | 
        MENTOR | 
        OH | 
        ICG TELECOM GROUP - OH | 
      
      
        | 440-536  | 
        ASHTABULA | 
        OH | 
        NEXTEL COMMUNICATIONS, INC. | 
      
      
        | 440-537  | 
        WILLOUGHBY | 
        OH | 
        ALLTEL COMMUNICATIONS, INC. - OH | 
      
      
        | 440-539  | 
        CLEVELAND | 
        OH | 
        CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH | 
      
      
        | 440-540  | 
        BEDFORD | 
        OH | 
        LEVEL 3 COMMUNICATIONS, LLC - OH | 
      
      
        | 440-541  | 
        LORAIN | 
        OH | 
        ICG TELECOM GROUP - OH | 
      
      
        | 440-542  | 
        CHAGRINFLS | 
        OH | 
        AMERITECH OHIO | 
      
      
        | 440-543  | 
        BAINBRIDGE | 
        OH | 
        WINDSTREAM WESTERN RESERVE, INC. | 
      
      
        | 440-544  | 
        HILLCREST | 
        OH | 
        TELEPORT COMMUNICATIONS GROUP, INC. - OH | 
      
      
        | 440-545  | 
        VICTORY | 
        OH | 
        BROADWING COMMUNICATIONS, LLC - OH | 
      
      
        | 440-546  | 
        BRECKSVL | 
        OH | 
        AMERITECH OHIO | 
      
      
        | 440-547  | 
        WILLOUGHBY | 
        OH | 
        ALLTEL OHIO, LP - OH | 
      
      
        | 440-548  | 
        PARKMAN | 
        OH | 
        WINDSTREAM WESTERN RESERVE, INC. | 
      
      
        | 440-549  | 
        WICKLIFFE | 
        OH | 
        BROADWING COMMUNICATIONS, LLC - OH | 
      
      
        | 440-550  | 
        BRECKSVL | 
        OH | 
        LEVEL 3 COMMUNICATIONS, LLC - OH | 
      
      
        | 440-551  | 
        PAINESVL | 
        OH | 
        XO OHIO, INC. | 
      
      
        | 440-552  | 
        CLEVELAND | 
        OH | 
        CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH | 
      
      
        | 440-553  | 
        WILLOUGHBY | 
        OH | 
        ARCH WIRELESS HOLDINGS, INC. | 
      
      
        | 440-554  | 
        CLEVELAND | 
        OH | 
        CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH | 
      
      
        | 440-555  | 
        CLEVELAND | 
        OH | 
        AMERITECH OHIO | 
      
      
        | 440-556  | 
        VICTORY | 
        OH | 
        GLOBAL CROSSING LOCAL SERVICES, INC.-OH | 
      
      
        | 440-557  | 
        RUSSELL | 
        OH | 
        SPRINT COMMUNICATIONS COMPANY, L.P. - OH | 
      
      
        | 440-562  | 
        WILLOUGHBY | 
        OH | 
        ARCH WIRELESS HOLDINGS, INC. | 
      
      
        | 440-563  | 
        ROCK CREEK | 
        OH | 
        WINDSTREAM WESTERN RESERVE, INC. | 
      
      
        | 440-564  | 
        NEWBURY | 
        OH | 
        WINDSTREAM WESTERN RESERVE, INC. | 
      
      
        | 440-565  | 
        HILLCREST | 
        OH | 
        LEVEL 3 COMMUNICATIONS, LLC - OH | 
      
      
        | 440-567  | 
        WILLOUGHBY | 
        OH | 
        ALLTEL COMMUNICATIONS, INC. - OH | 
      
      
        | 440-569  | 
        WICKLIFFE | 
        OH | 
        GLOBAL CROSSING LOCAL SERVICES, INC.-OH | 
      
      
        | 440-570  | 
        VICTORY | 
        OH | 
        NEW CINGULAR WIRELESS PCS, LLC - IL | 
      
      
        | 440-571  | 
        WILLOUGHBY | 
        OH | 
        AMERITECH OHIO | 
      
      
        | 440-572  | 
        STRONGSVL | 
        OH | 
        AMERITECH OHIO | 
      
      
        | 440-573  | 
        HILLCREST | 
        OH | 
        ALLEGIANCE TELECOM, INC. - OH | 
      
      
        | 440-574  | 
        OBERLIN | 
        OH | 
        SPRINT SPECTRUM L.P. | 
      
      
        | 440-575  | 
        TRINITY | 
        OH | 
        ALLEGIANCE TELECOM, INC. - OH | 
      
      
        | 440-576  | 
        JEFFERSON | 
        OH | 
        UNITED TEL. CO. OF OHIO | 
      
      
        | 440-577  | 
        PIERPONT | 
        OH | 
        WINDSTREAM WESTERN RESERVE, INC. |