Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

NPA: 424 [Rate centres in NPA 424] [Dial plan for NPA 424]

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 >>

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
424-516 0 Lomita CA LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730   2024-11-10   
424-516 1 Lomita CA LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730   2024-11-10   
424-516 2 Lomita CA   7139 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 730   2025-06-19   
424-516 3 Lomita CA LSANCA03GMD  624H ONVOY SPECTRUM, LLC 730   2025-01-23   
424-516 4 Lomita CA   7139 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 730   2025-08-26   
424-516 5 Lomita CA   649C ONVOY, LLC - CA 730   2026-01-04   
424-516 6 Lomita CA CYCMCALLCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 730   2024-12-23   
424-516 7 Lomita CA   649C ONVOY, LLC - CA 730   2025-09-27   
424-516 8 Lomita CA   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2025-09-14   
424-516 9 Lomita CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730   2024-11-09   
424-517 A San Pedro CA LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730   2024-11-10   
424-517 0 San Pedro CA LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730   2024-11-10   
424-517 1 San Pedro CA LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730   2024-11-10   
424-517 2 San Pedro CA LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730   2024-11-10   
424-517 3 San Pedro CA LSANCA03GMD  624H ONVOY SPECTRUM, LLC 730   2024-12-05   
424-517 4 San Pedro CA CYCMCALLCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 730   2024-11-14   
424-517 5 San Pedro CA CYCMCALLCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 730   2024-11-14   
424-517 6 San Pedro CA CYCMCALLCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 730   2024-11-14   
424-517 7 San Pedro CA CYCMCALLCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 730   2024-11-14   
424-517 8 San Pedro CA GRDNCA02KMD  7139 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 730   2024-11-11   
424-517 9 San Pedro CA CYCMCALLCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 730   2024-11-14   
424-518 A West Los Angeles CA LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730   2024-11-22   
424-518 0 West Los Angeles CA LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730   2024-11-22   
424-518 1 West Los Angeles CA CYCMCALLCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 730   2025-01-19   
424-518 2 West Los Angeles CA CYCMCALLCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 730   2024-11-23   
424-518 3 West Los Angeles CA CYCMCALLCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 730   2024-11-23   
424-518 7 West Los Angeles CA   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2025-09-29   
424-518 8 West Los Angeles CA   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2025-09-29   
424-518 9 West Los Angeles CA CYCMCALLCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 730   2025-01-19   
424-519 A Santa Monica: Santa Monica DA CA LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730   2024-11-23   
424-519 0 Santa Monica: Santa Monica DA CA LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730   2024-11-23   
424-519 1 Santa Monica: Santa Monica DA CA LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730   2024-11-23   
424-519 2 Santa Monica: Santa Monica DA CA LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730   2024-11-23   
424-519 3 Santa Monica: Santa Monica DA CA   6010 NEW CINGULAR WIRELESS PCS, LLC 730   2025-02-03   
424-519 4 Santa Monica: Santa Monica DA CA BLTNCAADGMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2024-11-24   
424-519 5 Santa Monica: Santa Monica DA CA SNMNCAXPX2Z  624H ONVOY SPECTRUM, LLC 730   2024-12-05   
424-519 6 Santa Monica: Santa Monica DA CA SNMNCAXPX2Z  624H ONVOY SPECTRUM, LLC 730   2024-12-05   
424-519 7 Santa Monica: Santa Monica DA CA SNMNCAXPX2Z  624H ONVOY SPECTRUM, LLC 730   2024-12-05   
424-519 8 Santa Monica: Santa Monica DA CA SNMNCAXPX2Z  624H ONVOY SPECTRUM, LLC 730   2024-12-05   
424-519 9 Santa Monica: Santa Monica DA CA SNMNCAXPX2Z  624H ONVOY SPECTRUM, LLC 730   2024-12-05   
424-520 A Compton: Compton DA CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730   2025-01-02   
424-520 0 Compton: Compton DA CA CYCMCALLCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 730   2025-01-03   
424-520 9 Compton: Compton DA CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730   2025-01-02   
424-521 A Compton: Compton DA CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730      
424-521 0 Compton: Compton DA CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730   2015-06-08   
424-521 1 Compton: Compton DA CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730   2015-06-08   
424-521 2 Compton: Compton DA CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730   2015-06-08   
424-521 3 Compton: Compton DA CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730   2015-06-08   
424-521 4 Compton: Compton DA CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730   2015-06-08   
424-521 5 Compton: Compton DA CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730   2015-06-08   

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 >>

Last updated: Wed, 04 Mar 2026 03:00:52 UTC

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.