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 14 15 16 17 18 19 20 21 22 23 24 25 >>

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
858-729 5 LAJLCA11DS0  9740 PACIFIC BELL 732      
858-729 6 SNDGCA0264Z  145J TERRA NOVA TELECOM INC. 732   2026-03-13   
858-729 7 LAJLCA11DS0  9740 PACIFIC BELL 732      
858-729 8 ESCNCAKY2MD  6529 T-MOBILE USA, INC. 732   2004-12-11   
858-729 9 LAJLCA11DS0  9740 PACIFIC BELL 732      
858-731 A SNDICAETDS0  7240 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 732      
858-731 0 SNDICAETDS0  7240 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 732      
858-731 1 SNDICAETDS0  7240 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 732      
858-731 2 SNDICAETDS0  7240 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 732      
858-731 3 SNDICAETDS0  7240 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 732      
858-731 4 SNDICAETDS0  7240 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 732      
858-731 5 SNDICAETDS0  7240 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 732      
858-731 6 SNDICAETAMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 732   2005-10-09   
858-731 7 SNDICAETAMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 732   2013-04-12   
858-731 8 SNDKCA882MD  671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 732   2006-06-13   
858-731 9 SNDICAETDS0  7240 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 732      
858-732 A SNDGCAJWDS0  649C ONVOY, LLC - CA 732      
858-732 0 SNDGCA0291Z  793K TWC IP ENABLED SERVICES, LLC 732   2015-10-30   
858-732 1 SNDICAETAMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 732   2015-11-14   
858-732 2 SNDICAETAMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 732   2015-12-14   
858-732 3 SNDGCAJWDS0  649C ONVOY, LLC - CA 732   2016-01-07   
858-732 4 SNDGCAJWDS0  649C ONVOY, LLC - CA 732   2016-01-07   
858-732 5 SNDGCA02XSZ  373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 732   2018-10-27   
858-732 6 SNDGCAJWDS0  649C ONVOY, LLC - CA 732   2016-01-13   
858-732 7 SNDGCA0242Z  516C AT&T CORP. 732   2015-10-30   
858-732 8 SNDGCAJWDS0  649C ONVOY, LLC - CA 732   2016-01-13   
858-732 9 SNDGCA0201Z  829J PAETEC ITEL, LLC 732   2015-11-27   
858-736 A SNDHCAAXJMD  7718 LEVEL 3 TELECOM OF CALIFORNIA, LP - CA 732      
858-736 0 SNDHCAAXJMD  7718 LEVEL 3 TELECOM OF CALIFORNIA, LP - CA 732      
858-736 1 SNDGCA51CM3  6010 NEW CINGULAR WIRELESS PCS, LLC 732   2004-10-18   
858-736 2 SNDGCAJWDS0  649C ONVOY, LLC - CA 732   2005-09-22   
858-736 3 SNDHCAAXJMD  7718 LEVEL 3 TELECOM OF CALIFORNIA, LP - CA 732      
858-736 4 SNDGCA51CM3  6010 NEW CINGULAR WIRELESS PCS, LLC 732   2003-10-04   
858-736 5 SNDGCA51CM3  6010 NEW CINGULAR WIRELESS PCS, LLC 732   2003-08-05   
858-736 6 SNDGCA51CM3  6010 NEW CINGULAR WIRELESS PCS, LLC 732   2003-02-02   
858-736 7 SNDGCA51CM3  6010 NEW CINGULAR WIRELESS PCS, LLC 732   2003-02-02   
858-736 8 SNDHCAAXJMD  7718 LEVEL 3 TELECOM OF CALIFORNIA, LP - CA 732   2005-05-02   
858-736 9 SNDACAGLDS2  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 732   2006-01-02   
858-750 A SNDICAETAMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 732      
858-750 0 SNDICAETAMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 732   2006-09-08   
858-750 1 SNDGCAJWDS0  649C ONVOY, LLC - CA 732   2008-07-07   
858-750 2 SNDGCA0291Z  793K TWC IP ENABLED SERVICES, LLC 732   2008-08-14   
858-750 3 SNDGCA0291Z  793K TWC IP ENABLED SERVICES, LLC 732   2008-08-28   
858-750 4 SNDKCA882MD  671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 732   2008-09-04   
858-750 5 SNDICAETAMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 732   2006-09-08   
858-750 6 SNDICAETDS0  7240 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 732   2006-09-14   
858-750 7 SNDICAETDS0  7240 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 732   2006-09-14   
858-750 8 SNDICAETAMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 732   2007-09-19   
858-750 9 SNDICAETAMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 732   2006-09-08   
858-752 A ESCNCAKY2MD  6529 T-MOBILE USA, INC. 732      

<< 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 >>

Last updated: Tue, 01 Sep 2026 00:40:05 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.