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 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 97 98 99 100 101 102 103 104 105 106 107 108 >>

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
661-414 5 Santa Clarita: Newhall-Castaic DA CA LSANCA54DS7  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 730   2005-10-02   
661-414 6 Santa Clarita: Newhall-Castaic DA CA BLTNCAADGMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2005-08-02   
661-414 7 Santa Clarita: Newhall-Castaic DA CA LSANCA54DS7  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 730   2005-10-02   
661-414 8 Santa Clarita: Newhall-Castaic DA CA SNANCALWDS1  7262 XO CALIFORNIA, INC. 730   2008-06-12   
661-414 9 Santa Clarita: Newhall-Castaic DA CA ANHMCANG2MD  4733 PAETEC COMMUNICATIONS, INC. - CA 730   2007-10-05   
661-416 A Arvin CA BKFDCA01VMD  6529 T-MOBILE USA, INC. 734      
661-416 0 Arvin CA BKFDCA01VMD  6529 T-MOBILE USA, INC. 734   2019-09-21   
661-416 1 Arvin CA BKFDCA018MD  6010 NEW CINGULAR WIRELESS PCS, LLC 734   2019-09-29   
661-416 2 Arvin CA BKFDCA11GMD  649C ONVOY, LLC - CA 734   2020-07-10   
661-416 3 Arvin CA BKFDCAKTOMD  073H TELNYX LLC 734   2017-03-24   
661-416 4 Arvin CA BKFDCA01VMD  6529 T-MOBILE USA, INC. 734   2016-12-09   
661-416 5 Arvin CA BKFDCA01VMD  6529 T-MOBILE USA, INC. 734   2016-12-09   
661-416 6 Arvin CA BKFDCA01VMD  6529 T-MOBILE USA, INC. 734   2019-10-25   
661-416 7 Arvin CA BKFDCA01VMD  6529 T-MOBILE USA, INC. 734   2016-10-20   
661-416 8 Arvin CA BKFDCA01VMD  6529 T-MOBILE USA, INC. 734   2016-10-20   
661-416 9 Arvin CA BKFDCA01VMD  6529 T-MOBILE USA, INC. 734   2016-10-20   
661-417 A Santa Clarita: Newhall-Castaic DA CA SIMICACNGT1  899D METROPCS NETWORKS, LLC 730      
661-417 0 Santa Clarita: Newhall-Castaic DA CA LSANCARCD3S  649C ONVOY, LLC - CA 730   2018-01-20   
661-417 1 Santa Clarita: Newhall-Castaic DA CA SIMICACNGT1  899D METROPCS NETWORKS, LLC 730   2018-05-05   
661-417 2 Santa Clarita: Newhall-Castaic DA CA LSANCARCD3S  649C ONVOY, LLC - CA 730   2019-03-03   
661-417 3 Santa Clarita: Newhall-Castaic DA CA LSANCARCD3S  649C ONVOY, LLC - CA 730   2019-03-03   
661-417 4 Santa Clarita: Newhall-Castaic DA CA SIMICACNGT1  6529 T-MOBILE USA, INC. 730   2019-02-15   
661-417 5 Santa Clarita: Newhall-Castaic DA CA LNBHCAAXDS0  707H INTEGRATED PATH COMMUNICATIONS, LLC - CA 730   2018-05-08   
661-417 6 Santa Clarita: Newhall-Castaic DA CA SIMICACNGT1  6529 T-MOBILE USA, INC. 730   2018-09-21   
661-417 7 Santa Clarita: Newhall-Castaic DA CA SIMICACNGT1  6529 T-MOBILE USA, INC. 730   2017-12-30   
661-417 8 Santa Clarita: Newhall-Castaic DA CA SHOKCA022MD  576C TIME WARNER CBL INFO SVCS (CA) DBA TIME WARNER CAB 730   2017-09-29   
661-417 9 Santa Clarita: Newhall-Castaic DA CA SIMICACNGT1  899D METROPCS NETWORKS, LLC 730   2017-08-21   
661-418 A Lancaster CA SIMICACNGT1  6529 T-MOBILE USA, INC. 730      
661-418 0 Lancaster CA SNMNCAXPXJY  576C TIME WARNER CBL INFO SVCS (CA) DBA TIME WARNER CAB 730   2012-04-13   
661-418 1 Lancaster CA BLTNCAADGMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2012-04-10   
661-418 2 Lancaster CA LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730   2012-04-19   
661-418 3 Lancaster CA SIMICACNGT1  6529 T-MOBILE USA, INC. 730   2012-06-29   
661-418 4 Lancaster CA BLTNCAADGMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2012-05-06   
661-418 5 Lancaster CA LSANCA54DS7  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 730   2013-10-15   
661-418 6 Lancaster CA SNMNCAXPXJY  576C TIME WARNER CBL INFO SVCS (CA) DBA TIME WARNER CAB 730   2012-06-25   
661-418 7 Lancaster CA LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730   2012-08-11   
661-418 8 Lancaster CA SIMICACNGT1  6529 T-MOBILE USA, INC. 730   2012-04-09   
661-418 9 Lancaster CA   6529 T-MOBILE USA, INC. 730   2012-04-09   
661-419 A Hi Vista CA BLPKCAAFCM0  0051 SHELCOMM 730      
661-420 A Cuyama CA BKFDCA119MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 734      
661-420 0 Cuyama CA BKFDCA11X7X  624H ONVOY SPECTRUM, LLC 734   2024-01-05   
661-420 1 Cuyama CA BKFDCA119MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 734      
661-420 2 Cuyama CA BKFDCAKTX1X  939H COMMIO, LLC 734   2024-01-28   
661-420 3 Cuyama CA BKFDCA11GMD  649C ONVOY, LLC - CA 734   2021-08-13   
661-420 4 Cuyama CA BKFDCAKTX6X  965H FRACTEL, LLC 734   2020-07-27   
661-420 6 Cuyama CA BKFDCAKTX1X  939H COMMIO, LLC 734   2021-10-22   
661-420 7 Cuyama CA BKFDCAKTX1X  939H COMMIO, LLC 734   2021-10-22   
661-420 8 Cuyama CA BKFDCAKTX1X  939H COMMIO, LLC 734   2021-10-22   
661-420 9 Cuyama CA BKFDCAKTX1X  939H COMMIO, LLC 734   2021-10-22   
661-421 A Bakersfield: Main DA CA BKFDCA01VMD  6529 T-MOBILE USA, INC. 734      

<< 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 97 98 99 100 101 102 103 104 105 106 107 108 >>

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.