Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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OCN: 671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS

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NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
661-410 3 Bakersfield: North DA CA BKFDCA12XRX  734      
661-410 4 Bakersfield: North DA CA BKFDCA12XRX  734      
661-410 5 Bakersfield: North DA CA BKFDCA12XRX  734   2014-04-11   
661-426 7 Bakersfield: Main DA CA BKFDCA12XRX  734   2013-09-07   
661-427 4 Bakersfield: Main DA CA BKFDCA12XRX  734   2008-11-17   
661-431 A Bakersfield: Main DA CA BKFDCA12XRX  734      
661-431 1 Bakersfield: Main DA CA BKFDCA12XRX  734   2005-07-08   
661-437 4 Bakersfield: Main DA CA BKFDCA12XRX  734   2012-10-15   
661-454 3 Delano CA BKFDCA12XRX  734   2007-09-03   
661-458 2 McFarland CA BKFDCA12XRX  734   2018-04-06   
661-468 8 Palmdale: Agua Dulce DA CA IRVNCASM1MD  730   2011-04-22   
661-481 2 Santa Clarita: Newhall-Castaic DA CA IRVNCASM1MD  730   2013-10-25   
661-493 A Bakersfield: Main DA CA BKFDCA12XRX  734      
661-493 7 Bakersfield: Main DA CA BKFDCA12XRX  734   2014-06-22   
661-505 4 Santa Clarita: Newhall-Castaic DA CA IRVNCASM1MD  730   2008-11-16   
661-579 2 Lancaster CA IRVNCASM1MD  730   2008-10-16   
661-579 8 Lancaster CA IRVNCASM1MD  730   2008-09-04   
661-590 A Wasco CA BKFDCA12XRX  734      
661-590 7 Wasco CA BKFDCA12XRX  734   2022-08-15   
661-593 7 Santa Clarita: Newhall-Castaic DA CA IRVNCASM1MD  730   2016-09-12   
661-595 A Bakersfield: Main DA CA BKFDCA12XRX  734      
661-595 2 Bakersfield: Main DA CA BKFDCA12XRX  734   2022-07-25   
661-595 8 Bakersfield: Main DA CA BKFDCA12XRX  734   2022-07-25   
661-615 6 Bakersfield: North DA CA BKFDCA12XRX  734   2004-06-06   
661-617 6 Bakersfield: South DA CA BKFDCA12XRX  734   2004-06-06   
661-621 9 Santa Clarita: Saugus Canyon Country DA CA IRVNCASM1MD  730   2025-09-04   
661-630 7 Shafter CA BKFDCA12XRX  734   2007-09-03   
661-649 A Arvin CA BKFDCA12XRX  734      
661-649 5 Arvin CA BKFDCA12XRX  734   2022-08-24   
661-673 8 Santa Clarita: Saugus Canyon Country DA CA IRVNCASM1MD  730   2009-06-11   
661-679 1 Bakersfield: North DA CA BKFDCA12XRX  734   2005-06-18   
661-687 A Bakersfield: South DA CA BKFDCA12XRX  734      
661-687 3 Bakersfield: South DA CA BKFDCA12XRX  734   2022-07-25   
661-687 6 Bakersfield: South DA CA BKFDCA12XRX  734   2022-07-25   
661-705 A Santa Clarita: Newhall-Castaic DA CA IRVNCASM1MD  730      
661-705 0 Santa Clarita: Newhall-Castaic DA CA IRVNCASM1MD  730      
661-705 1 Santa Clarita: Newhall-Castaic DA CA IRVNCASM1MD  730      
661-705 2 Santa Clarita: Newhall-Castaic DA CA IRVNCASM1MD  730      
661-705 3 Santa Clarita: Newhall-Castaic DA CA IRVNCASM1MD  730      
661-705 4 Santa Clarita: Newhall-Castaic DA CA IRVNCASM1MD  730      
661-705 5 Santa Clarita: Newhall-Castaic DA CA IRVNCASM1MD  730      
661-705 7 Santa Clarita: Newhall-Castaic DA CA IRVNCASM1MD  730      
661-705 8 Santa Clarita: Newhall-Castaic DA CA IRVNCASM1MD  730      
661-705 9 Santa Clarita: Newhall-Castaic DA CA IRVNCASM1MD  730      
661-716 A Bakersfield: Main DA CA BKFDCA12XRX  734      
661-750 5 Tehachapi CA BKFDCA12XRX  734   2007-10-28   
661-764 2 Buttonwillow CA BKFDCA12XRX  734   2013-09-16   
661-768 7 Taft CA BKFDCA12XRX  734   2014-07-24   
661-772 5 Wasco CA BKFDCA12XRX  734   2005-12-05   
661-777 3 Lebec CA BKFDCA12XRX  734   2010-11-28   

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Last updated: Thu, 05 Feb 2026 23:41:55 UTC

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