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: 450

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
424-450 A San Pedro CA CYCMCALLCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 730      
424-450 0 San Pedro CA LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730      
424-450 1 San Pedro CA LSANCA03GMD  624H ONVOY SPECTRUM, LLC 730      
424-450 2 San Pedro CA SHOKCA02IMD  7139 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 730      
424-450 3 San Pedro CA CYCMCALLCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 730      
424-450 4 San Pedro CA CYCMCALLCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 730      
424-450 5 San Pedro CA CYCMCALLCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 730      
424-450 6 San Pedro CA CYCMCALLCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 730      
424-450 7 San Pedro CA TRNECAGBGT3  6529 T-MOBILE USA, INC. 730      
424-450 8 San Pedro CA TRNECAGBGT3  6529 T-MOBILE USA, INC. 730      
424-450 9 San Pedro CA CYCMCALLCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 730      

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

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.