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: 424 [Rate centres in NPA 424] [Dial plan for NPA 424]

NXX: 312

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
424-312 A Inglewood CA CYCMCALLCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 730      
424-312 0 Inglewood CA LSANCARCD3S  649C ONVOY, LLC - CA 730      
424-312 1 Inglewood CA SHOKCA022MD  576C TIME WARNER CBL INFO SVCS (CA) DBA TIME WARNER CAB 730      
424-312 2 Inglewood CA CYCMCALLCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 730      
424-312 3 Inglewood CA CYCMCALLCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 730      
424-312 4 Inglewood CA CYCMCALLCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 730      
424-312 5 Inglewood CA CYCMCALLCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 730      
424-312 6 Inglewood CA TRNECAGBGT3  6529 T-MOBILE USA, INC. 730      
424-312 7 Inglewood CA TRNECAGBGT3  6529 T-MOBILE USA, INC. 730      
424-312 8 Inglewood CA TRNECAGBGT3  6529 T-MOBILE USA, INC. 730      
424-312 9 Inglewood CA CYCMCALLCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 730      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.