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: 661 [Rate centres in NPA 661] [Dial plan for NPA 661]

<< 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 >>

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
661-574 4 Palmdale: Palmdale DA CA PLDLCA01DS0  9740 PACIFIC BELL 730      
661-574 5 Palmdale: Palmdale DA CA TRNECAGB7MD  899D METROPCS NETWORKS, LLC 730   2010-02-21   
661-574 6 Palmdale: Palmdale DA CA PLDLCA01DS0  9740 PACIFIC BELL 730      
661-574 7 Palmdale: Palmdale DA CA LSANCARC80Z  9262 UTILITY TELECOM GROUP, LLC - CA 730      
661-574 8 Palmdale: Palmdale DA CA LSANCARC80Z  9262 UTILITY TELECOM GROUP, LLC - CA 730      
661-574 9 Palmdale: Palmdale DA CA PLDLCA01DS0  9740 PACIFIC BELL 730      
661-575 A Palmdale: Palmdale DA CA PLDLCA01DS0  9740 PACIFIC BELL 730      
661-575 0 Palmdale: Palmdale DA CA PLDLCA01DS0  9740 PACIFIC BELL 730      
661-575 1 Palmdale: Palmdale DA CA PLDLCA01DS0  9740 PACIFIC BELL 730      
661-575 2 Palmdale: Palmdale DA CA PLDLCA01DS0  9740 PACIFIC BELL 730      
661-575 3 Palmdale: Palmdale DA CA BLTNCAADGMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2004-02-05   
661-575 4 Palmdale: Palmdale DA CA TRNECAGB7MD  899D METROPCS NETWORKS, LLC 730   2009-12-21   
661-575 5 Palmdale: Palmdale DA CA BLTNCAADGMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2009-11-03   
661-575 6 Palmdale: Palmdale DA CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730   2016-10-15   
661-575 7 Palmdale: Palmdale DA CA BLTNCAADGMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2005-05-13   
661-575 8 Palmdale: Palmdale DA CA PLDLCA01DS0  9740 PACIFIC BELL 730      
661-575 9 Palmdale: Palmdale DA CA PLDLCA01DS0  9740 PACIFIC BELL 730      
661-576 A Palmdale: Palmdale DA CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730      
661-576 0 Palmdale: Palmdale DA CA TRNECAGB7MD  899D METROPCS NETWORKS, LLC 730   2015-09-25   
661-576 1 Palmdale: Palmdale DA CA CYCMCALLCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 730   2015-09-25   
661-576 2 Palmdale: Palmdale DA CA CYCMCALLCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 730   2015-09-25   
661-576 3 Palmdale: Palmdale DA CA CYCMCALLCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 730   2015-09-25   
661-576 4 Palmdale: Palmdale DA CA CYCMCALLCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 730   2015-09-25   
661-576 5 Palmdale: Palmdale DA CA CYCMCALLCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 730   2015-09-25   
661-576 6 Palmdale: Palmdale DA CA CYCMCALLCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 730   2015-09-25   
661-576 7 Palmdale: Palmdale DA CA CYCMCALLCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 730   2015-11-19   
661-576 8 Palmdale: Palmdale DA CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730   2015-09-24   
661-576 9 Palmdale: Palmdale DA CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730   2015-09-24   
661-577 A Taft CA BKFDCA01X2X  5562 METROPCS, INC. 734      
661-577 0 Taft CA BKFDCA11X7X  624H ONVOY SPECTRUM, LLC 734   2021-12-08   
661-577 1 Taft CA BKFDCA01X2X  6529 T-MOBILE USA, INC. 734   2015-03-09   
661-577 2 Taft CA BKFDCA01X2X  5562 METROPCS, INC. 734      
661-577 3 Taft CA BKFDCA01X2X  6529 T-MOBILE USA, INC. 734   2015-03-09   
661-577 4 Taft CA BKFDCA119MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 734   2005-07-30   
661-577 5 Taft CA BKFDCAJAAMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 734   2017-05-26   
661-577 6 Taft CA BKFDCA01X2X  5562 METROPCS, INC. 734      
661-577 7 Taft CA BKFDCA01X2X  5562 METROPCS, INC. 734      
661-577 8 Taft CA BKFDCAJAAMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 734   2022-05-26   
661-577 9 Taft CA BKFDCA11GMD  649C ONVOY, LLC - CA 734   2021-07-22   
661-578 A Bakersfield: Main DA CA BKFDCA119MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 734      
661-578 0 Bakersfield: Main DA CA BKFDCA018MD  6010 NEW CINGULAR WIRELESS PCS, LLC 734   2007-04-06   
661-578 1 Bakersfield: Main DA CA BKFDCA018MD  6010 NEW CINGULAR WIRELESS PCS, LLC 734   2007-04-06   
661-578 2 Bakersfield: Main DA CA BKFDCA018MD  6010 NEW CINGULAR WIRELESS PCS, LLC 734   2007-04-06   
661-578 3 Bakersfield: Main DA CA BKFDCA018MD  6010 NEW CINGULAR WIRELESS PCS, LLC 734   2007-04-06   
661-578 4 Bakersfield: Main DA CA BKFDCA01X2X  5562 METROPCS, INC. 734   2008-09-04   
661-578 5 Bakersfield: Main DA CA BKFDCA119MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 734   2006-03-17   
661-578 6 Bakersfield: Main DA CA BKFDCA119MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 734   2006-03-17   
661-578 7 Bakersfield: Main DA CA BKFDCA018MD  6010 NEW CINGULAR WIRELESS PCS, LLC 734   2007-04-06   
661-578 8 Bakersfield: Main DA CA BKFDCA018MD  6010 NEW CINGULAR WIRELESS PCS, LLC 734   2007-04-06   
661-578 9 Bakersfield: Main DA CA BKFDCA01X2X  5562 METROPCS, INC. 734   2008-09-04   
661-579 A Lancaster CA SNMNCAXPX3Z  649C ONVOY, LLC - CA 730   2024-01-23   
661-579 0 Lancaster CA SNMNCAXPXJY  576C TIME WARNER CBL INFO SVCS (CA) DBA TIME WARNER CAB 730   2010-08-30   
661-579 1 Lancaster CA SNMNCAXPX3Z  649C ONVOY, LLC - CA 730   2010-03-06   
661-579 2 Lancaster CA IRVNCASM1MD  671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 730   2008-10-16   
661-579 3 Lancaster CA LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730   2010-07-02   
661-579 4 Lancaster CA LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730   2010-07-02   
661-579 5 Lancaster CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730   2011-05-08   
661-579 6 Lancaster CA SNMNCAXPXJY  576C TIME WARNER CBL INFO SVCS (CA) DBA TIME WARNER CAB 730   2009-02-04   
661-579 7 Lancaster CA SNMNCAXPX3Z  649C ONVOY, LLC - CA 730   2008-08-01   
661-579 8 Lancaster CA IRVNCASM1MD  671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 730   2008-09-04   
661-579 9 Lancaster CA SNMNCAXPXJY  576C TIME WARNER CBL INFO SVCS (CA) DBA TIME WARNER CAB 730   2009-03-22   
661-580 A Palmdale: Palmdale DA CA CYCMCALLCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 730      
661-580 0 Palmdale: Palmdale DA CA LSANCARC32Z  073H TELNYX LLC 730   2021-11-07   
661-580 1 Palmdale: Palmdale DA CA LSANCA03GMD  624H ONVOY SPECTRUM, LLC 730   2021-11-07   
661-580 2 Palmdale: Palmdale DA CA LSANCA03GMD  624H ONVOY SPECTRUM, LLC 730   2021-11-07   
661-580 3 Palmdale: Palmdale DA CA CYCMCALLCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 730   2021-10-17   
661-580 4 Palmdale: Palmdale DA CA CYCMCALLCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 730   2021-10-17   
661-580 5 Palmdale: Palmdale DA CA CYCMCALLCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 730   2021-10-17   
661-580 6 Palmdale: Palmdale DA CA CYCMCALLCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 730   2021-10-17   
661-580 7 Palmdale: Palmdale DA CA CYCMCALLCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 730   2021-10-17   
661-580 8 Palmdale: Palmdale DA CA CYCMCALLCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 730   2021-10-17   
661-580 9 Palmdale: Palmdale DA CA CYCMCALLCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 730   2021-10-17   
661-581 A Palmdale: Palmdale DA CA GRDNCA02KMD  7139 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 730      
661-581 0 Palmdale: Palmdale DA CA BLTNCAADGMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2022-04-15   
661-581 1 Palmdale: Palmdale DA CA LSANCA03GMD  624H ONVOY SPECTRUM, LLC 730   2022-01-29   
661-581 2 Palmdale: Palmdale DA CA LSANCA03GMD  624H ONVOY SPECTRUM, LLC 730   2022-01-29   
661-581 3 Palmdale: Palmdale DA CA BLTNCAADGMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2022-10-21   
661-581 4 Palmdale: Palmdale DA CA BLTNCAADGMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2022-11-21   
661-581 5 Palmdale: Palmdale DA CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730   2022-09-09   
661-581 6 Palmdale: Palmdale DA CA GRDNCA02KMD  7139 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 730   2021-12-17   
661-581 7 Palmdale: Palmdale DA CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730   2022-09-09   
661-581 8 Palmdale: Palmdale DA CA BLTNCAADGMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2022-06-20   
661-581 9 Palmdale: Palmdale DA CA LSANCAJWDS9  373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 730   2022-09-17   
661-582 A Lancaster CA ANHMCACLCM6  6010 NEW CINGULAR WIRELESS PCS, LLC 730      
661-582 0 Lancaster CA SNMNCAXPX3Z  649C ONVOY, LLC - CA 730   2017-06-11   
661-582 1 Lancaster CA   145J TERRA NOVA TELECOM INC. 730   2021-04-28   
661-582 2 Lancaster CA ANHMCACLCM6  6010 NEW CINGULAR WIRELESS PCS, LLC 730   2016-10-13   
661-582 3 Lancaster CA ANHMCACLCM6  6010 NEW CINGULAR WIRELESS PCS, LLC 730   2015-12-06   
661-582 4 Lancaster CA SNMNCAXPX3Z  649C ONVOY, LLC - CA 730   2016-03-11   
661-582 5 Lancaster CA SNMNCAXPX3Z  649C ONVOY, LLC - CA 730   2016-03-11   
661-582 6 Lancaster CA SNMNCAXPXJY  576C TIME WARNER CBL INFO SVCS (CA) DBA TIME WARNER CAB 730   2016-06-10   
661-582 7 Lancaster CA NHLLCA01DS0  7480 PACIFIC BELL (COMPETITIVE) 730   2016-06-15   
661-582 8 Lancaster CA SNMNCAXPXJY  576C TIME WARNER CBL INFO SVCS (CA) DBA TIME WARNER CAB 730   2016-09-23   
661-582 9 Lancaster CA ANHMCACLCM6  6010 NEW CINGULAR WIRELESS PCS, LLC 730   2015-12-05   
661-583 A Palmdale: Palmdale DA CA CYCMCALLCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 730      
661-583 0 Palmdale: Palmdale DA CA LSANCARCD3S  649C ONVOY, LLC - CA 730   2016-03-07   
661-583 1 Palmdale: Palmdale DA CA LSANCARCD3S  649C ONVOY, LLC - CA 730   2016-03-07   
661-583 2 Palmdale: Palmdale DA CA TRNECAGB7MD  899D METROPCS NETWORKS, LLC 730   2016-03-18   
661-583 3 Palmdale: Palmdale DA CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730   2015-12-29   
661-583 4 Palmdale: Palmdale DA CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730   2015-12-29   

<< 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 >>

Last updated: Sun, 27 Apr 2025 12:48:38 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.