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: 409

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
442-409 A Calexico CA SNDGCA51CM3  6010 NEW CINGULAR WIRELESS PCS, LLC 732      
442-409 0 Calexico CA SNDGCAJWDS0  649C ONVOY, LLC - CA 732   2023-10-30   
442-409 1 Calexico CA   6010 NEW CINGULAR WIRELESS PCS, LLC 732   2025-10-17   
442-409 2 Calexico CA SNDGCAJWDS0  649C ONVOY, LLC - CA 732   2023-10-30   
442-409 6 Calexico CA SNDGCAJWDS0  649C ONVOY, LLC - CA 732   2023-10-30   
442-409 8 Calexico CA SNDGCA51CM3  6010 NEW CINGULAR WIRELESS PCS, LLC 732   2024-01-01   
442-409 9 Calexico CA SNDGCA51CM3  6010 NEW CINGULAR WIRELESS PCS, LLC 732   2023-07-31   

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.