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: 347

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
310-347 A Torrance CA CYCMCALLCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 730      
310-347 0 Torrance CA LSANCARCD3S  649C ONVOY, LLC - CA 730   2012-12-30   
310-347 1 Torrance CA CYCMCALLCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 730   2003-12-14   
310-347 2 Torrance CA CYCMCALLCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 730   2003-12-14   
310-347 3 Torrance CA IRVNCASM1MD  671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 730   2003-04-11   
310-347 4 Torrance CA LSANCARCD3S  649C ONVOY, LLC - CA 730   2004-10-04   
310-347 5 Torrance CA CYCMCALLCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 730   2003-04-01   
310-347 6 Torrance CA CYCMCALLCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 730   2003-04-01   
310-347 7 Torrance CA CYCMCALLCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 730   2003-04-01   
310-347 8 Torrance CA CYCMCALLCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 730   2003-06-09   
310-347 9 Torrance CA TRNECAGBGT3  6529 T-MOBILE USA, INC. 730   2005-05-23   

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.