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.

Lomita, CA

1 2 3 4 >>

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
310-257 A LOMTCA11DS0  9740 PACIFIC BELL 730      
310-325 A LOMTCA11DS0  9740 PACIFIC BELL 730      
310-326 A LOMTCA11DS0  9740 PACIFIC BELL 730      
310-517 A LOMTCA11DS0  9740 PACIFIC BELL 730      
310-530 A LOMTCA11DS0  9740 PACIFIC BELL 730      
310-534 A LOMTCA11DS0  9740 PACIFIC BELL 730      
310-539 A LOMTCA11DS0  9740 PACIFIC BELL 730      
310-602 A LNBHCATVDS0  7262 XO CALIFORNIA, INC. 730      
310-602 0 LNBHCATVDS0  7262 XO CALIFORNIA, INC. 730      
310-602 1 LNBHCATVDS0  7262 XO CALIFORNIA, INC. 730      
310-602 2 GRDNCA02DS3  7421 AT&T LOCAL 730   2002-10-27   
310-602 3 LSANCAGJDS4  7453 U.S. TELEPACIFIC CORP. - CA 730   2012-01-12   
310-602 4 LSANCA03DS7  7139 TELEPORT COMMUNICATIONS GROUP - LOS ANGELES 730   2002-04-12   
310-602 5 LSANCAGJDS4  7453 U.S. TELEPACIFIC CORP. - CA 730   2000-04-11   
310-602 6 LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730   2003-02-11   
310-602 7 ANHMCAHLDS1  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 730   2003-05-04   
310-602 8 IRVECAJTDS0  7718 LEVEL 3 TELECOM OF CALIFORNIA, LP - CA 730   2000-04-10   
310-602 9 TRNECAGBGT3  6529 T-MOBILE USA, INC. 730   2004-11-12   
310-626 A LSANCA54DS7  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 730      
310-626 0 LSANCA54DS7  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 730      
310-626 1 LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730   2011-06-23   
310-626 2 TRNECAGBGT3  6529 T-MOBILE USA, INC. 730   2004-03-02   
310-626 3 TRNECAGBGT3  6529 T-MOBILE USA, INC. 730   2003-06-03   
310-626 4 LSANCA54DS7  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 730   2003-01-11   
310-626 5 BLTNCAADGMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2004-05-09   
310-626 6 BLFLCA01DS0  8322 MPOWER COMMUNICATIONS CORP - CA 730   2003-04-11   
310-626 7 TRNECAGBGT3  6529 T-MOBILE USA, INC. 730   2004-08-28   
310-626 8 LSANCA54DS0  8782 ALLEGIANCE TELECOM, INC. - CA 730   2000-05-09   
310-626 9 LSAJCAWZDS1  4733 PAETEC COMMUNICATIONS, INC. - CA 730   2002-06-17   
310-784 A LOMTCA11DS0  9740 PACIFIC BELL 730      
310-891 A LOMTCA11DS0  9740 PACIFIC BELL 730      
310-986 A TRNECAGBGT3  6529 T-MOBILE USA, INC. 730      
310-986 0 TRNECAGBGT3  6529 T-MOBILE USA, INC. 730   2005-02-24   
310-986 1 TRNECAGBGT3  6529 T-MOBILE USA, INC. 730   2005-02-24   
310-986 2 LSANCA54DS7  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 730   2005-02-25   
310-986 3 LSANCARCD3S  649C ONVOY, LLC - CA 730   2005-07-07   
310-986 4 TRNECAGBGT3  6529 T-MOBILE USA, INC. 730   2005-07-21   
310-986 5 TRNECAGBGT3  6529 T-MOBILE USA, INC. 730   2005-08-25   
310-986 6 ANHMCANGDS0  4733 PAETEC COMMUNICATIONS, INC. - CA 730   2011-06-21   
310-986 7 TRNECAGBGT3  6529 T-MOBILE USA, INC. 730   2005-08-25   
310-986 8 LSAJCAWZDS2  3662 PACIFIC CENTREX SERVICES, INC. - CA 730   2005-04-04   
310-986 9 BLTNCAADGMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2005-06-05   
310-997 A BLTNCAADGMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2021-02-25   
310-997 0 LSANCA54DS7  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 730   2005-12-10   
310-997 1 LSANCARCD3S  649C ONVOY, LLC - CA 730   2005-11-10   
310-997 2 LSANCA54DS7  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 730   2006-07-06   
310-997 3 LNBHCATVDS0  7262 XO CALIFORNIA, INC. 730   2005-11-11   
310-997 4 LSANCARCD3S  649C ONVOY, LLC - CA 730   2016-11-26   
310-997 5 BLTNCAADGMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2006-06-19   
310-997 6 TRNECAGBGT3  6529 T-MOBILE USA, INC. 730   2006-02-09   

1 2 3 4 >>

Last updated: Sun, 07 Feb 2021 01:52:50 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.