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: 270

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
424-270 A West Los Angeles CA LSANCA54DS7  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 730      
424-270 0 West Los Angeles CA LSANCA54DS7  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 730   2007-02-03   
424-270 1 West Los Angeles CA LSANCA54DS7  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 730   2007-02-03   
424-270 2 West Los Angeles CA ANHMCANG2MD  4733 PAETEC COMMUNICATIONS, INC. - CA 730   2007-02-17   
424-270 3 West Los Angeles CA TRNECAGBGT3  899D METROPCS NETWORKS, LLC 730   2007-06-16   
424-270 4 West Los Angeles CA TRNECAGBGT3  6529 T-MOBILE USA, INC. 730   2007-06-25   
424-270 5 West Los Angeles CA TRNECAGBGT3  6529 T-MOBILE USA, INC. 730   2007-06-25   
424-270 6 West Los Angeles CA SNMNCAXPX3Z  649C ONVOY, LLC - CA 730   2008-07-17   
424-270 7 West Los Angeles CA   478A DMR COMMUNICATIONS INC. - CA 730   2007-10-29   
424-270 8 West Los Angeles CA IRVNCASM1MD  671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 730   2008-09-14   
424-270 9 West Los Angeles CA LSANCA54DS7  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 730   2008-01-29   

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

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.