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: 323 [Rate centres in NPA 323] [Dial plan for NPA 323]

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 >>

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
323-200 A Los Angeles: DA 12 CA LSANCA03DS3  7139 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 730      
323-200 0 Los Angeles: DA 12 CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730   2004-03-28   
323-200 1 Los Angeles: DA 12 CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730   2004-03-28   
323-200 2 Los Angeles: DA 12 CA LSANCA03DS3  7139 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 730      
323-200 3 Los Angeles: DA 12 CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730   2004-03-28   
323-200 4 Los Angeles: DA 12 CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730   2005-09-03   
323-200 5 Los Angeles: DA 12 CA LSANCA03GMD  624H ONVOY SPECTRUM, LLC 730   2021-05-22   
323-200 6 Los Angeles: DA 12 CA TRNECAGBGT3  899D METROPCS NETWORKS, LLC 730   2003-11-09   
323-200 7 Los Angeles: DA 12 CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730   2003-11-09   
323-200 8 Los Angeles: DA 12 CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730   2003-11-09   
323-200 9 Los Angeles: DA 12 CA LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730   2015-04-18   
323-201 A Montebello CA IRVNCASM1MD  671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 730      
323-201 0 Montebello CA IRVNCASM1MD  671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 730      
323-201 1 Montebello CA CYCMCALLCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 730   2005-03-14   
323-201 2 Montebello CA LSANCA54DS7  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 730   2001-10-29   
323-201 3 Montebello CA IRVNCASM1MD  671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 730      
323-201 4 Montebello CA IRVNCASM1MD  671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 730      
323-201 5 Montebello CA IRVNCASM1MD  671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 730      
323-201 6 Montebello CA IRVNCASM1MD  671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 730      
323-201 7 Montebello CA LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730   2011-02-17   
323-201 8 Montebello CA IRVNCASM1MD  671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 730      
323-201 9 Montebello CA IRVNCASM1MD  671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 730      
323-202 A Los Angeles: DA 13 CA LSANCA03DS3  7139 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 730      
323-202 0 Los Angeles: DA 13 CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730   2004-07-17   
323-202 1 Los Angeles: DA 13 CA LSANCA03DS3  7139 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 730      
323-202 2 Los Angeles: DA 13 CA LSANCAJWDS9  373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 730   2016-12-08   
323-202 3 Los Angeles: DA 13 CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730   2004-12-11   
323-202 4 Los Angeles: DA 13 CA LSANCA03DS3  7139 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 730      
323-202 5 Los Angeles: DA 13 CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730   2004-01-21   
323-202 6 Los Angeles: DA 13 CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730   2004-01-21   
323-202 7 Los Angeles: DA 13 CA TRNECAGBGT3  899D METROPCS NETWORKS, LLC 730   2004-02-04   
323-202 8 Los Angeles: DA 13 CA TRNECAGBGT3  899D METROPCS NETWORKS, LLC 730   2004-03-29   
323-202 9 Los Angeles: DA 13 CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730   2005-01-14   
323-203 A Los Angeles: DA 14 CA LSANCA03DS3  7139 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 730      
323-203 0 Los Angeles: DA 14 CA LSANCA54DS7  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 730   2005-12-11   
323-203 1 Los Angeles: DA 14 CA LSANCA54DS7  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 730   2005-12-11   
323-203 2 Los Angeles: DA 14 CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730   2006-02-03   
323-203 3 Los Angeles: DA 14 CA LSANCA03DS3  7139 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 730      
323-203 4 Los Angeles: DA 14 CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730   2006-02-03   
323-203 5 Los Angeles: DA 14 CA CYCMCALLCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 730   2003-12-15   
323-203 6 Los Angeles: DA 14 CA CYCMCALLCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 730   2003-01-28   
323-203 7 Los Angeles: DA 14 CA CYCMCALLCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 730   2003-01-28   
323-203 8 Los Angeles: DA 14 CA CYCMCALLCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 730   2003-08-26   
323-203 9 Los Angeles: DA 14 CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730   2007-10-24   
323-204 A Los Angeles: DA 06 CA   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 730   2025-04-05   
323-204 0 Los Angeles: DA 06 CA   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 730      
323-204 1 Los Angeles: DA 06 CA BLTNCAADGMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2003-11-19   
323-204 2 Los Angeles: DA 06 CA BLTNCAADGMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2004-07-08   
323-204 3 Los Angeles: DA 06 CA   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 730      
323-204 4 Los Angeles: DA 06 CA LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730   2024-12-02   
323-204 5 Los Angeles: DA 06 CA BLTNCAADGMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2009-11-18   
323-204 6 Los Angeles: DA 06 CA BLTNCAADGMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2004-07-08   
323-204 7 Los Angeles: DA 06 CA BLTNCAADGMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2004-07-08   
323-204 8 Los Angeles: DA 06 CA BLTNCAADGMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2004-07-08   
323-204 9 Los Angeles: DA 06 CA LSANCA54DS7  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 730      
323-205 A Los Angeles: DA 04 CA   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 730      
323-205 0 Los Angeles: DA 04 CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730   2005-07-04   
323-205 1 Los Angeles: DA 04 CA   515J IP HORIZON LLC 730   2003-10-12   
323-205 2 Los Angeles: DA 04 CA   515J IP HORIZON LLC 730   2003-10-12   
323-205 3 Los Angeles: DA 04 CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730   2024-12-13   
323-205 4 Los Angeles: DA 04 CA   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 730      
323-205 5 Los Angeles: DA 04 CA LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730   2008-11-19   
323-205 6 Los Angeles: DA 04 CA LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730   2008-11-19   
323-205 7 Los Angeles: DA 04 CA LSANCARCD3S  649C ONVOY, LLC - CA 730   2005-07-10   
323-205 8 Los Angeles: DA 04 CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730   2005-08-01   
323-205 9 Los Angeles: DA 04 CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730   2024-07-24   
323-206 A Los Angeles: DA 03 CA   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 730      
323-206 0 Los Angeles: DA 03 CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730   2003-08-27   
323-206 1 Los Angeles: DA 03 CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730   2003-08-27   
323-206 2 Los Angeles: DA 03 CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730   2003-08-27   
323-206 3 Los Angeles: DA 03 CA LSANCA03GMD  624H ONVOY SPECTRUM, LLC 730   2024-12-04   
323-206 4 Los Angeles: DA 03 CA   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 730      
323-206 5 Los Angeles: DA 03 CA BLTNCAADPS2  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 730   2010-12-13   
323-206 6 Los Angeles: DA 03 CA LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730   2008-11-19   
323-206 7 Los Angeles: DA 03 CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730   2003-08-27   
323-206 8 Los Angeles: DA 03 CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730   2003-08-27   
323-206 9 Los Angeles: DA 03 CA LSANCA03GMD  624H ONVOY SPECTRUM, LLC 730   2024-10-20   
323-207 A Los Angeles: DA 08 CA   981E BANDWIDTH.COM CLEC, LLC - CA 730      
323-207 0 Los Angeles: DA 08 CA LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730   2011-07-28   
323-207 1 Los Angeles: DA 08 CA LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730   2019-05-31   
323-207 2 Los Angeles: DA 08 CA   145J TERRA NOVA TELECOM INC. 730   2022-04-19   
323-207 3 Los Angeles: DA 08 CA CYCMCALLCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 730   2024-10-19   
323-207 4 Los Angeles: DA 08 CA   649C ONVOY, LLC - CA 730   2025-08-17   
323-207 5 Los Angeles: DA 08 CA LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730   2011-07-28   
323-207 6 Los Angeles: DA 08 CA LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730   2008-11-20   
323-207 7 Los Angeles: DA 08 CA BLTNCAADPS2  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 730   2005-09-12   
323-207 8 Los Angeles: DA 08 CA LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730   2011-07-28   
323-207 9 Los Angeles: DA 08 CA LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730   2014-10-10   
323-208 A Los Angeles: DA 09 CA   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 730      
323-208 0 Los Angeles: DA 09 CA LSANCARCD3S  649C ONVOY, LLC - CA 730   2017-03-17   
323-208 1 Los Angeles: DA 09 CA CYCMCALLCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 730   2003-05-15   
323-208 2 Los Angeles: DA 09 CA CYCMCALLCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 730   2003-07-15   
323-208 3 Los Angeles: DA 09 CA   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 730      
323-208 4 Los Angeles: DA 09 CA   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 730      
323-208 5 Los Angeles: DA 09 CA CYCMCALLCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 730   2025-01-02   
323-208 6 Los Angeles: DA 09 CA LSANCARCD3S  649C ONVOY, LLC - CA 730   2009-02-10   
323-208 7 Los Angeles: DA 09 CA ANHMCA01XEY  516C AT&T CORP. 730   2015-03-11   
323-208 8 Los Angeles: DA 09 CA SHOKCA022MD  576C TIME WARNER CBL INFO SVCS (CA) DBA TIME WARNER CAB 730   2018-10-27   
323-208 9 Los Angeles: DA 09 CA LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730   2012-10-08   
323-209 A Los Angeles: DA 13 CA   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 730      

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 >>

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.