| Exchange | Rate Center | State | Operating Company | 
      
        | 213-899 | LSAN DA 01 | CA | COOK TELECOM, INC. | 
      
        | 213-901 | LSAN DA 01 | CA | THE TELEPHONE CONNECTION OF LOS ANGELES, INC. | 
      
        | 213-905 | LSAN DA 07 | CA | T-MOBILE USA, INC. | 
      
        | 213-908 | LSAN DA 10 | CA | PACIFIC BELL | 
      
        | 213-909 | LSAN DA 10 | CA | XO CALIFORNIA, INC. | 
      
        | 213-910 | LSAN DA 01 | CA | BLUE LICENSES HOLDING, LLC | 
      
        | 213-911 |  | CA |  | 
      
        | 213-915 | LSAN DA 10 | CA | TIME WARNER COMMUNICATIONS AXS OF CALIFORNIA | 
      
        | 213-917 | LSAN DA 01 | CA | ARCH WIRELESS HOLDINGS, INC. | 
      
        | 213-918 | LSAN DA 01 | CA | NETWORK SERVICES LLC | 
      
        | 213-919 | LSAN DA 01 | CA | ARCH WIRELESS HOLDINGS, INC. | 
      
        | 213-920 | LSAN DA 01 | CA | ARCH WIRELESS HOLDINGS, INC. | 
      
        | 213-921 | LSAN DA 01 | CA | SPRINT SPECTRUM L.P. | 
      
        | 213-922 | LSAN DA 01 | CA | PACIFIC BELL | 
      
        | 213-923 | LSAN DA 01 | CA | NEXTEL COMMUNICATIONS, INC. | 
      
        | 213-924 | LSAN DA 01 | CA | SPRINT SPECTRUM L.P. | 
      
        | 213-925 | LSAN DA 01 | CA | SPRINT SPECTRUM L.P. | 
      
        | 213-926 | LSAN DA 01 | CA | SPRINT SPECTRUM L.P. | 
      
        | 213-927 | LSAN DA 10 | CA | ALLEGIANCE TELECOM, INC. - CA | 
      
        | 213-928 | LSAN DA 01 | CA | PACIFIC BELL | 
      
        | 213-929 | LSAN DA 01 | CA | TIME WARNER COMMUNICATIONS AXS OF CALIFORNIA | 
      
        | 213-935 | LSAN DA 01 | CA | COST PLUS COMMUNICATIONS, LLC - CA | 
      
        | 213-941 | LSAN DA 01 | CA | ARCH WIRELESS HOLDINGS, INC. | 
      
        | 213-943 | LSAN DA 01 | CA | XO CALIFORNIA, INC. | 
      
        | 213-944 | LSAN DA 01 | CA | SPRINT SPECTRUM L.P. | 
      
        | 213-946 |  | CA |  | 
      
        | 213-947 | LSAN DA 01 | CA | PAC - WEST TELECOMM, INC. | 
      
        | 213-948 | LSAN DA 01 | CA | SPRINT SPECTRUM L.P. | 
      
        | 213-949 | LSAN DA 01 | CA | SPRINT SPECTRUM L.P. | 
      
        | 213-950 |  | CA |  | 
      
        | 213-952 | LSAN DA 01 | CA | BLUE LICENSES HOLDING, LLC | 
      
        | 213-955 | LSAN DA 01 | CA | PACIFIC BELL | 
      
        | 213-958 |  | CA |  | 
      
        | 213-959 |  | CA |  | 
      
        | 213-961 | LSAN DA 01 | CA | ARCH WIRELESS HOLDINGS, INC. | 
      
        | 213-963 | LSAN DA 01 | CA | ARCH WIRELESS HOLDINGS, INC. | 
      
        | 213-966 | LSAN DA 07 | CA | THE TELEPHONE CONNECTION OF LOS ANGELES, INC. | 
      
        | 213-968 | LSAN DA 01 | CA | ARCH WIRELESS HOLDINGS, INC. | 
      
        | 213-972 | LSAN DA 01 | CA | PACIFIC BELL | 
      
        | 213-973 | LSAN DA 07 | CA | 360NETWORKS (USA) INC. - CA | 
      
        | 213-974 | LSAN DA 01 | CA | PACIFIC BELL | 
      
        | 213-975 | LSAN DA 01 | CA | PACIFIC BELL | 
      
        | 213-976 |  | CA |  | 
      
        | 213-977 | LSAN DA 01 | CA | PACIFIC BELL | 
      
        | 213-978 | LSAN DA 01 | CA | PACIFIC BELL | 
      
        | 213-984 | LSAN DA 10 | CA | LEVEL 3 COMMUNICATIONS, LLC - CA | 
      
        | 213-985 | LSAN DA 10 | CA | LEVEL 3 COMMUNICATIONS, LLC - CA | 
      
        | 213-986 | LSAN DA 01 | CA | MPOWER COMMUNICATIONS CORP. - CA | 
      
        | 213-988 | LSAN DA 01 | CA | PACIFIC BELL | 
      
        | 213-989 | LSAN DA 10 | CA | PACIFIC BELL | 
      
        | 213-990 | LSAN DA 01 | CA | ARCH WIRELESS HOLDINGS, INC. | 
      
        | 213-991 | LSAN DA 01 | CA | ARCH WIRELESS HOLDINGS, INC. | 
      
        | 213-992 | LSAN DA 07 | CA | GLOBAL CROSSING LOCAL SERVICES, INC.-CA | 
      
        | 213-994 | LSAN DA 01 | CA | ARCH WIRELESS HOLDINGS, INC. | 
      
        | 213-995 | LSAN DA 01 | CA | ALLEGIANCE TELECOM, INC. - CA | 
      
        | 213-996 | LSAN DA 01 | CA | PACIFIC BELL | 
      
        | 213-999 | LSAN DA 01 | CA | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 
      
        | 214-200 | DALLAS | TX | SOUTHWESTERN BELL | 
      
        | 214-201 | GRANDPRARI | TX | XSPEDIUS MANAGEMENT CO SWITCHED SVCS FT WORTH TX | 
      
        | 214-202 | GRANDPRARI | TX | NEW CINGULAR WIRELESS PCS, LLC - IL | 
      
        | 214-203 | CEDAR HILL | TX | LOGIX COMMUNICATIONS CORPORATION - TX | 
      
        | 214-204 | GRANDPRARI | TX | LOGIX COMMUNICATIONS CORPORATION - TX | 
      
        | 214-205 | DALLAS | TX | NEW CINGULAR WIRELESS PCS, LLC - IL | 
      
        | 214-206 | DALLAS | TX | INTEGRATED COMMUNICATIONS CONSULTANTS, INC. - TX | 
      
        | 214-207 | GRANDPRARI | TX | SPRINT SPECTRUM L.P. | 
      
        | 214-208 | GRANDPRARI | TX | NEW CINGULAR WIRELESS PCS, LLC - IL | 
      
        | 214-209 | DALLAS | TX | MCIMETRO, ATS, INC. | 
      
        | 214-210 | DALLAS | TX | MCI WORLDCOM COMMUNICATIONS, INC. - TX | 
      
        | 214-211 |  | TX |  | 
      
        | 214-212 | GRANDPRARI | TX | NEW CINGULAR WIRELESS PCS, LLC - IL | 
      
        | 214-213 | GRANDPRARI | TX | NEW CINGULAR WIRELESS PCS, LLC - IL | 
      
        | 214-215 | GRANDPRARI | TX | NEW CINGULAR WIRELESS PCS, LLC - IL | 
      
        | 214-216 | DE SOTO | TX | LOGIX COMMUNICATIONS CORPORATION - TX | 
      
        | 214-217 | DALLAS | TX | LOGIX COMMUNICATIONS CORPORATION - TX | 
      
        | 214-218 | MCKINNEY | TX | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 
      
        | 214-219 | DALLAS | TX | SOUTHWESTERN BELL | 
      
        | 214-220 | DALLAS | TX | SOUTHWESTERN BELL | 
      
        | 214-221 | DALLAS | TX | SOUTHWESTERN BELL | 
      
        | 214-222 | LEWISVILLE | TX | GTE-SW DBA VERIZON SW INC.-TX | 
      
        | 214-223 | IRVING | TX | SPRINT SPECTRUM L.P. | 
      
        | 214-224 | DALLAS | TX | SOUTHWESTERN BELL | 
      
        | 214-225 | GRANDPRARI | TX | UTEX COMMUNICATIONS CORP. - TX | 
      
        | 214-226 | IRVING | TX | NEW CINGULAR WIRELESS PCS, LLC - IL | 
      
        | 214-227 | PLANO | TX | GTE-SW DBA VERIZON SW INC.-TX | 
      
        | 214-228 | GRANDPRARI | TX | T-MOBILE USA, INC. | 
      
        | 214-229 | DALLAS | TX | NEXTEL COMMUNICATIONS, INC. | 
      
        | 214-230 | WAXAHACHIE | TX | YMAX COMMUNICATIONS CORP. - TX | 
      
        | 214-231 | DALLAS | TX | ALLEGIANCE TELECOM, INC. - TX | 
      
        | 214-232 | GRANDPRARI | TX | NEW CINGULAR WIRELESS PCS, LLC - IL | 
      
        | 214-233 | DLFTWTARPT | TX | GLOBAL CROSSING LOCAL SERVICES, INC.-TX | 
      
        | 214-234 | DALLAS | TX | SOUTHWESTERN BELL | 
      
        | 214-235 | GRANDPRARI | TX | SPRINT COMMUNICATIONS COMPANY, L.P. - TX | 
      
        | 214-236 | GRANDPRARI | TX | NEW CINGULAR WIRELESS PCS, LLC - IL | 
      
        | 214-237 | DALLAS | TX | XO TEXAS, INC. | 
      
        | 214-238 | PLANO | TX | AWESOME PAGING, INC. | 
      
        | 214-239 | DALLAS | TX | SOUTHWESTERN BELL | 
      
        | 214-240 | GRANDPRARI | TX | NEW CINGULAR WIRELESS PCS, LLC - IL | 
      
        | 214-241 | ENNIS | TX | 1STEL, INC. - TX | 
      
        | 214-242 | DALLAS | TX | SPRINT COMMUNICATIONS COMPANY, L.P. - TX | 
      
        | 214-243 | DALLAS | TX | SOUTHWESTERN BELL |