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

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NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
661-752 A Rosamond CA BKFDCA119MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 734      
661-752 0 Rosamond CA   649C ONVOY, LLC - CA 734      
661-752 1 Rosamond CA   649C ONVOY, LLC - CA 734      
661-752 2 Rosamond CA   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 734      
661-752 3 Rosamond CA   6010 NEW CINGULAR WIRELESS PCS, LLC 734   2015-07-16   
661-752 5 Rosamond CA   981E BANDWIDTH.COM CLEC, LLC - CA 734   2009-01-15   
661-752 8 Rosamond CA   073H TELNYX LLC 734   2020-10-17   
661-752 9 Rosamond CA   649C ONVOY, LLC - CA 734   2024-12-02   
661-753 A Santa Clarita: Newhall-Castaic DA CA NHLLCA01DS0  9740 PACIFIC BELL 730      
661-753 0 Santa Clarita: Newhall-Castaic DA CA   9740 PACIFIC BELL 730      
661-753 1 Santa Clarita: Newhall-Castaic DA CA   9740 PACIFIC BELL 730      
661-753 2 Santa Clarita: Newhall-Castaic DA CA   9740 PACIFIC BELL 730      
661-753 3 Santa Clarita: Newhall-Castaic DA CA   516C AT&T CORP. 730   2006-06-30   
661-753 4 Santa Clarita: Newhall-Castaic DA CA   6529 T-MOBILE USA, INC. 730   2007-01-19   
661-753 5 Santa Clarita: Newhall-Castaic DA CA   9740 PACIFIC BELL 730      
661-753 6 Santa Clarita: Newhall-Castaic DA CA   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2005-10-07   
661-753 7 Santa Clarita: Newhall-Castaic DA CA   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2005-10-07   
661-753 8 Santa Clarita: Newhall-Castaic DA CA   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 730   2006-08-19   
661-753 9 Santa Clarita: Newhall-Castaic DA CA   9740 PACIFIC BELL 730      
661-754 A Mojave CA BKFDCA018MD  6010 NEW CINGULAR WIRELESS PCS, LLC 734      
661-754 0 Mojave CA   6010 NEW CINGULAR WIRELESS PCS, LLC 734      
661-754 1 Mojave CA   6010 NEW CINGULAR WIRELESS PCS, LLC 734      
661-754 2 Mojave CA   6010 NEW CINGULAR WIRELESS PCS, LLC 734   2007-05-05   
661-754 3 Mojave CA   6010 NEW CINGULAR WIRELESS PCS, LLC 734   2007-11-22   
661-754 4 Mojave CA   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 734   2015-01-27   
661-754 5 Mojave CA   6010 NEW CINGULAR WIRELESS PCS, LLC 734   2011-10-24   
661-754 6 Mojave CA   6010 NEW CINGULAR WIRELESS PCS, LLC 734      
661-754 7 Mojave CA   7139 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 734   2020-07-06   
661-754 8 Mojave CA   973E RACE TELECOMMUNICATIONS, INC. - CA 734   2016-11-20   
661-754 9 Mojave CA   6010 NEW CINGULAR WIRELESS PCS, LLC 734   2015-07-10   
661-755 A Santa Clarita: Newhall-Castaic DA CA CYCMCALLCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 730      
661-758 A Wasco CA WASCCA01RS0  9740 PACIFIC BELL 734      
661-759 A Wasco CA BKFDCA01X2X  5562 METROPCS, INC. 734      
661-759 0 Wasco CA   5562 METROPCS, INC. 734   2017-04-30   
661-759 1 Wasco CA   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 734      
661-759 2 Wasco CA   649C ONVOY, LLC - CA 734      
661-759 3 Wasco CA   6010 NEW CINGULAR WIRELESS PCS, LLC 734   2018-01-12   
661-759 4 Wasco CA   5562 METROPCS, INC. 734   2018-11-04   
661-759 5 Wasco CA   337E BRIGHT HOUSE NTWS INFORMATION SVCS (CALIFORNIA) CA 734   2018-01-05   
661-759 6 Wasco CA   5562 METROPCS, INC. 734   2018-05-06   
661-759 7 Wasco CA   5562 METROPCS, INC. 734   2011-04-02   
661-759 8 Wasco CA   373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 734   2016-12-01   
661-759 9 Wasco CA   5562 METROPCS, INC. 734   2015-09-05   
661-760 A Buttonwillow CA BKFDCA11GMD  649C ONVOY, LLC - CA 734      
661-760 0 Buttonwillow CA   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 734      
661-760 1 Buttonwillow CA   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 734      
661-760 2 Buttonwillow CA   649C ONVOY, LLC - CA 734   2017-04-04   
661-760 3 Buttonwillow CA   981E BANDWIDTH.COM CLEC, LLC - CA 734   2022-02-07   
661-760 5 Buttonwillow CA   649C ONVOY, LLC - CA 734   2021-07-22   
661-760 6 Buttonwillow CA   649C ONVOY, LLC - CA 734   2019-02-22   
661-760 7 Buttonwillow CA   649C ONVOY, LLC - CA 734   2019-02-22   
661-760 8 Buttonwillow CA   490J DISH WIRELESS, LLC 734   2023-11-13   
661-760 9 Buttonwillow CA   649C ONVOY, LLC - CA 734   2021-10-29   
661-761 A McKittrick CA BKFDCA11GMD  649C ONVOY, LLC - CA 734      
661-761 0 McKittrick CA   624H ONVOY SPECTRUM, LLC 734   2024-01-05   
661-761 2 McKittrick CA   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 734   2022-02-14   
661-761 3 McKittrick CA   649C ONVOY, LLC - CA 734   2021-08-13   
661-761 5 McKittrick CA   508J CENTURYLINK COMMUNICATIONS, LLC 734   2015-05-05   
661-761 6 McKittrick CA   649C ONVOY, LLC - CA 734   2021-03-04   
661-761 7 McKittrick CA   649C ONVOY, LLC - CA 734   2021-03-04   
661-762 A McKittrick CA MCKTCAXFRS1  4420 FRONTIER CALIFORNIA INC. 734      
661-762 3 McKittrick CA   649C ONVOY, LLC - CA 734   2019-02-22   
661-762 4 McKittrick CA   649C ONVOY, LLC - CA 734   2019-02-22   
661-762 5 McKittrick CA   649C ONVOY, LLC - CA 734   2017-04-04   
661-762 6 McKittrick CA   4420 FRONTIER CALIFORNIA INC. 734      
661-762 7 McKittrick CA   4420 FRONTIER CALIFORNIA INC. 734      
661-762 8 McKittrick CA   4420 FRONTIER CALIFORNIA INC. 734      
661-762 9 McKittrick CA   073H TELNYX LLC 734   2018-07-10   
661-763 A Taft CA BTNWCAXFPS0  4420 FRONTIER CALIFORNIA INC. 734      
661-763 0 Taft CA   4420 FRONTIER CALIFORNIA INC. 734      
661-763 1 Taft CA   4420 FRONTIER CALIFORNIA INC. 734      
661-763 2 Taft CA   4420 FRONTIER CALIFORNIA INC. 734      
661-763 3 Taft CA   4420 FRONTIER CALIFORNIA INC. 734      
661-763 4 Taft CA   4420 FRONTIER CALIFORNIA INC. 734      
661-763 5 Taft CA   4420 FRONTIER CALIFORNIA INC. 734      
661-763 6 Taft CA   4420 FRONTIER CALIFORNIA INC. 734      
661-763 7 Taft CA   4420 FRONTIER CALIFORNIA INC. 734      
661-763 8 Taft CA   4420 FRONTIER CALIFORNIA INC. 734      
661-763 9 Taft CA   145J TERRA NOVA TELECOM INC. 734   2021-10-02   
661-764 A Buttonwillow CA BTNWCAXFRS3  4420 FRONTIER CALIFORNIA INC. 734      
661-764 0 Buttonwillow CA   624H ONVOY SPECTRUM, LLC 734   2024-01-05   
661-764 1 Buttonwillow CA   145J TERRA NOVA TELECOM INC. 734   2025-04-16   
661-764 2 Buttonwillow CA   671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 734   2013-09-16   
661-764 3 Buttonwillow CA   373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 734   2018-10-21   
661-764 4 Buttonwillow CA   649C ONVOY, LLC - CA 734   2021-04-02   
661-764 5 Buttonwillow CA   4420 FRONTIER CALIFORNIA INC. 734      
661-764 6 Buttonwillow CA   4420 FRONTIER CALIFORNIA INC. 734      
661-764 8 Buttonwillow CA   073H TELNYX LLC 734   2018-07-09   
661-764 9 Buttonwillow CA   4420 FRONTIER CALIFORNIA INC. 734      
661-765 A Taft CA TAFTCAXFDS0  4420 FRONTIER CALIFORNIA INC. 734      
661-765 1 Taft CA   4420 FRONTIER CALIFORNIA INC. 734      
661-765 2 Taft CA   4420 FRONTIER CALIFORNIA INC. 734      
661-765 3 Taft CA   4420 FRONTIER CALIFORNIA INC. 734      
661-765 4 Taft CA   4420 FRONTIER CALIFORNIA INC. 734      
661-765 5 Taft CA   4420 FRONTIER CALIFORNIA INC. 734      
661-765 6 Taft CA   4420 FRONTIER CALIFORNIA INC. 734      
661-765 7 Taft CA   4420 FRONTIER CALIFORNIA INC. 734      
661-765 8 Taft CA   649C ONVOY, LLC - CA 734   2018-09-24   
661-765 9 Taft CA   4420 FRONTIER CALIFORNIA INC. 734      
661-766 A Cuyama CA CUYMCAXFRS1  4420 FRONTIER CALIFORNIA INC. 734      

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Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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