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: 442 [Rate centres in NPA 442] [Dial plan for NPA 442]

NXX: 457

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
442-457 A Victorville: Adelanto DA CA VTVLCAXAX5Y  649C ONVOY, LLC - CA 730   2024-05-12   
442-457 0 Victorville: Adelanto DA CA VTVLCAXAX5Y  649C ONVOY, LLC - CA 730   2024-05-12   
442-457 1 Victorville: Adelanto DA CA   624H ONVOY SPECTRUM, LLC 730   2025-01-30   
442-457 2 Victorville: Adelanto DA CA   6010 NEW CINGULAR WIRELESS PCS, LLC 730   2025-02-03   
442-457 3 Victorville: Adelanto DA CA   6010 NEW CINGULAR WIRELESS PCS, LLC 730   2025-02-03   
442-457 4 Victorville: Adelanto DA CA   6010 NEW CINGULAR WIRELESS PCS, LLC 730   2025-02-03   
442-457 5 Victorville: Adelanto DA CA   6010 NEW CINGULAR WIRELESS PCS, LLC 730   2025-02-03   
442-457 6 Victorville: Adelanto DA CA   6010 NEW CINGULAR WIRELESS PCS, LLC 730   2025-02-03   
442-457 7 Victorville: Adelanto DA CA   6010 NEW CINGULAR WIRELESS PCS, LLC 730   2025-02-03   
442-457 8 Victorville: Adelanto DA CA   6010 NEW CINGULAR WIRELESS PCS, LLC 730   2025-02-03   
442-457 9 Victorville: Adelanto DA CA   6010 NEW CINGULAR WIRELESS PCS, LLC 730   2025-02-03   

Last updated: Sat, 05 Apr 2025 03:03:23 UTC

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.