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: 310 [Rate centres in NPA 310] [Dial plan for NPA 310]

NXX: 775

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
310-775 A West Los Angeles CA LSANCA54DS7  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 730      
310-775 0 West Los Angeles CA CYCMCALLCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 730   2006-06-19   
310-775 1 West Los Angeles CA BLTNCAADGMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2006-06-19   
310-775 2 West Los Angeles CA SNMNCAXPX3Z  649C ONVOY, LLC - CA 730   2008-08-07   
310-775 3 West Los Angeles CA TRNECAGBGT3  6529 T-MOBILE USA, INC. 730   2006-02-20   
310-775 4 West Los Angeles CA WLANCA01DS0  7480 PACIFIC BELL (COMPETITIVE) 730   2006-02-20   
310-775 5 West Los Angeles CA BLTNCAADGMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2006-02-20   
310-775 6 West Los Angeles CA ANHMCANG2MD  4733 PAETEC COMMUNICATIONS, INC. - CA 730   2006-02-20   
310-775 7 West Los Angeles CA BLTNCAADGMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2006-02-20   
310-775 8 West Los Angeles CA ANHMCANG2MD  4733 PAETEC COMMUNICATIONS, INC. - CA 730   2006-02-20   
310-775 9 West Los Angeles CA LSANCA54ZMD  8690 GLOBAL CROSSING LOCAL SERVICES, INC. - CA 730   2006-03-04   

Last updated: Fri, 22 Mar 2024 03:02:44 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.