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: 477

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
424-477 A San Pedro CA MTPKCACG1MD  776C CHARTER FIBERLINK CA-CCO, LLC - CA 730      
424-477 0 San Pedro CA MTPKCACG1MD  776C CHARTER FIBERLINK CA-CCO, LLC - CA 730   2006-08-26   
424-477 1 San Pedro CA   145J TERRA NOVA TELECOM INC. 730   2021-04-28   
424-477 2 San Pedro CA LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730   2011-03-06   
424-477 3 San Pedro CA LSANCARCD3S  649C ONVOY, LLC - CA 730   2006-10-02   
424-477 4 San Pedro CA BLTNCAADGMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2006-09-05   
424-477 5 San Pedro CA SHOKCA022MD  576C TIME WARNER CBL INFO SVCS (CA) DBA TIME WARNER CAB 730   2007-03-13   
424-477 6 San Pedro CA TRNECAGBGT3  6529 T-MOBILE USA, INC. 730   2006-12-18   
424-477 7 San Pedro CA BLTNCAADGMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2006-10-30   
424-477 8 San Pedro CA TRNECAGBGT3  6529 T-MOBILE USA, INC. 730   2006-12-18   
424-477 9 San Pedro CA TRNECAGBGT3  6529 T-MOBILE USA, INC. 730   2006-12-18   

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

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.