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: 452

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
442-452 A Valley Center CA SNDGCAJWDS0  649C ONVOY, LLC - CA 732   2024-05-02   
442-452 0 Valley Center CA SNDGCAJWDS0  649C ONVOY, LLC - CA 732   2024-05-02   
442-452 1 Valley Center CA ESCNCAKY2MD  6529 T-MOBILE USA, INC. 732   2024-11-25   
442-452 2 Valley Center CA   6010 NEW CINGULAR WIRELESS PCS, LLC 732   2025-06-06   
442-452 3 Valley Center CA   373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 732   2025-06-09   

Last updated: Wed, 18 Jun 2025 02:30:00 UTC

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.