Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 310 [Rate centres in NPA 310] [Dial plan for NPA 310]

NXX: 956

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
310-956 A Hawthorne CA IRVECAEIDS2  7240 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 730      
310-956 0 Hawthorne CA CYCMCALLCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 730   2005-01-03   
310-956 1 Hawthorne CA LSANCA54DS7  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 730   2005-05-16   
310-956 2 Hawthorne CA BLTNCAADGMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2006-08-01   
310-956 3 Hawthorne CA   829J PAETEC ITEL, LLC 730   2005-08-19   
310-956 4 Hawthorne CA LSANCA54DS7  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 730   2005-05-16   
310-956 5 Hawthorne CA CYCMCALLCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 730   2006-01-04   
310-956 6 Hawthorne CA BLTNCAADGMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2010-04-03   
310-956 7 Hawthorne CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730   2005-03-10   
310-956 8 Hawthorne CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730   2005-03-10   
310-956 9 Hawthorne CA BLTNCAADGMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2010-05-04   

Last updated: Tue, 16 Jun 2026 00:09:45 UTC

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