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.

La Jolla, CA

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 >>

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
858-401 2   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 732   2004-06-06   
858-401 3   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 732   2004-06-06   
858-401 4   7147 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 732   2004-04-29   
858-401 5   7147 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 732   2004-04-29   
858-401 6   981E BANDWIDTH.COM CLEC, LLC - CA 732   2013-03-30   
858-401 7   981E BANDWIDTH.COM CLEC, LLC - CA 732   2013-03-30   
858-401 8   7147 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 732   2004-04-29   
858-401 9   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 732   2004-06-06   
858-402 A SNDGCA51CM3  6010 NEW CINGULAR WIRELESS PCS, LLC 732   2024-04-12   
858-402 0   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 732   2024-06-29   
858-402 1   6010 NEW CINGULAR WIRELESS PCS, LLC 732   2024-04-12   
858-402 2   6010 NEW CINGULAR WIRELESS PCS, LLC 732   2024-04-12   
858-402 3   6010 NEW CINGULAR WIRELESS PCS, LLC 732   2024-04-12   
858-402 4   6010 NEW CINGULAR WIRELESS PCS, LLC 732   2024-04-12   
858-402 5   6010 NEW CINGULAR WIRELESS PCS, LLC 732   2024-04-12   
858-402 6   6010 NEW CINGULAR WIRELESS PCS, LLC 732   2024-04-12   
858-402 7   6010 NEW CINGULAR WIRELESS PCS, LLC 732   2024-04-12   
858-402 8   6010 NEW CINGULAR WIRELESS PCS, LLC 732   2024-04-12   
858-402 9   6010 NEW CINGULAR WIRELESS PCS, LLC 732   2024-04-12   
858-404 A SNDGCA15DS0  9740 PACIFIC BELL 732      
858-404 0   9740 PACIFIC BELL 732      
858-404 1   9740 PACIFIC BELL 732      
858-404 2   9740 PACIFIC BELL 732      
858-404 3   9740 PACIFIC BELL 732      
858-404 4   9740 PACIFIC BELL 732      
858-404 5   9740 PACIFIC BELL 732      
858-404 6   9740 PACIFIC BELL 732      
858-404 7   9740 PACIFIC BELL 732      
858-404 8   9740 PACIFIC BELL 732      
858-404 9   7147 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 732   2019-09-27   
858-405 A ESCNCAKY2MD  6529 T-MOBILE USA, INC. 732      
858-406 A SNDGCA51CM3  6010 NEW CINGULAR WIRELESS PCS, LLC 732   2024-09-13   
858-406 0   6010 NEW CINGULAR WIRELESS PCS, LLC 732   2024-10-10   
858-406 1   6010 NEW CINGULAR WIRELESS PCS, LLC 732   2024-10-10   
858-406 2   6010 NEW CINGULAR WIRELESS PCS, LLC 732   2024-10-10   
858-406 3   6010 NEW CINGULAR WIRELESS PCS, LLC 732   2024-10-10   
858-406 4   6010 NEW CINGULAR WIRELESS PCS, LLC 732   2024-10-10   
858-406 5   6010 NEW CINGULAR WIRELESS PCS, LLC 732   2024-10-10   
858-406 6   6010 NEW CINGULAR WIRELESS PCS, LLC 732   2024-09-13   
858-406 7   6010 NEW CINGULAR WIRELESS PCS, LLC 732   2024-09-13   
858-406 8   6010 NEW CINGULAR WIRELESS PCS, LLC 732   2024-09-13   
858-406 9   6010 NEW CINGULAR WIRELESS PCS, LLC 732   2024-09-13   
858-409 A SNDGCA51CM3  6010 NEW CINGULAR WIRELESS PCS, LLC 732   2024-11-08   
858-409 1   7147 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 732   2025-01-14   
858-409 2   7147 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 732   2025-01-14   
858-409 3   7147 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 732   2025-01-14   
858-409 4   7147 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 732   2025-01-14   
858-409 5   7147 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 732   2025-01-14   
858-409 6   6010 NEW CINGULAR WIRELESS PCS, LLC 732   2024-11-08   
858-409 7   6010 NEW CINGULAR WIRELESS PCS, LLC 732   2024-11-08   
858-409 8   6010 NEW CINGULAR WIRELESS PCS, LLC 732   2024-11-08   
858-409 9   6010 NEW CINGULAR WIRELESS PCS, LLC 732   2024-11-08   
858-410 A SNDICAETDS0  7240 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 732      
858-412 A SNDGCA0241Z  576C TIME WARNER CBL INFO SVCS (CA) DBA TIME WARNER CAB 732      
858-412 0   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 732   2007-05-03   
858-412 1   649C ONVOY, LLC - CA 732   2007-06-29   
858-412 2   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 732   2007-05-04   
858-412 3   576C TIME WARNER CBL INFO SVCS (CA) DBA TIME WARNER CAB 732   2007-07-12   
858-412 4   576C TIME WARNER CBL INFO SVCS (CA) DBA TIME WARNER CAB 732   2007-01-10   
858-412 5   576C TIME WARNER CBL INFO SVCS (CA) DBA TIME WARNER CAB 732   2007-01-10   
858-412 6   576C TIME WARNER CBL INFO SVCS (CA) DBA TIME WARNER CAB 732   2007-07-12   
858-412 7   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 732   2007-07-20   
858-412 8   318J COMCAST IP PHONE, LLC 732   2008-08-09   
858-412 9   6529 T-MOBILE USA, INC. 732   2007-09-28   
858-431 A SNDGCA07DS1  7421 AT&T - LOCAL 732      
858-431 0   7421 AT&T - LOCAL 732      
858-431 1   7421 AT&T - LOCAL 732      
858-431 2   7421 AT&T - LOCAL 732      
858-431 3   7421 AT&T - LOCAL 732      
858-431 4   7240 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 732   2005-09-22   
858-431 5   7421 AT&T - LOCAL 732      
858-431 6   6010 NEW CINGULAR WIRELESS PCS, LLC 732   2005-09-25   
858-431 7   7421 AT&T - LOCAL 732      
858-431 8   7421 AT&T - LOCAL 732      
858-431 9   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 732   2005-10-09   
858-450 A SNDGCA15DS1  9740 PACIFIC BELL 732      
858-452 A SNDGCA15DS0  9740 PACIFIC BELL 732      
858-453 A SNDGCA15DS0  9740 PACIFIC BELL 732      
858-454 A LAJLCA11DS0  9740 PACIFIC BELL 732      
858-455 A SNDGCA15DS0  9740 PACIFIC BELL 732      
858-456 A LAJLCA11DS0  9740 PACIFIC BELL 732      
858-457 A SNDGCA15DS1  9740 PACIFIC BELL 732      
858-458 A SNDGCA15DS1  9740 PACIFIC BELL 732      
858-459 A LAJLCA11DS0  9740 PACIFIC BELL 732      
858-483 A PCBHCA01DS0  9740 PACIFIC BELL 732      
858-488 A PCBHCA11RS0  9740 PACIFIC BELL 732      
858-490 A PCBHCA01DS0  9740 PACIFIC BELL 732      
858-500 A SNDGCAJWDS0  649C ONVOY, LLC - CA 732      
858-500 0   649C ONVOY, LLC - CA 732   2012-06-16   
858-500 1   649C ONVOY, LLC - CA 732   2022-05-28   
858-500 2   6010 NEW CINGULAR WIRELESS PCS, LLC 732   2012-10-22   
858-500 3   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 732   2012-06-25   
858-500 4   829J PAETEC ITEL, LLC 732   2012-07-02   
858-500 5   649C ONVOY, LLC - CA 732   2012-07-09   
858-500 6   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 732   2012-09-07   
858-500 7   318J COMCAST IP PHONE, LLC 732   2012-08-03   
858-500 8   318J COMCAST IP PHONE, LLC 732   2012-07-13   
858-500 9   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 732   2012-10-16   
858-518 A ESCNCAKY2MD  6529 T-MOBILE USA, INC. 732      
858-518 0   6529 T-MOBILE USA, INC. 732      

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 >>

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.