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: 413

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
442-413 A Encinitas CA ESCNCAKY2MD  6529 T-MOBILE USA, INC. 732      
442-413 6 Encinitas CA SNDGCAJWDS0  649C ONVOY, LLC - CA 732   2023-10-30   
442-413 7 Encinitas CA SNDGCA51CM3  6010 NEW CINGULAR WIRELESS PCS, LLC 732   2024-10-05   
442-413 8 Encinitas CA   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 732   2025-04-21   
442-413 9 Encinitas CA ESCNCAKY2MD  6529 T-MOBILE USA, INC. 732   2023-10-13   

Last updated: Fri, 25 Jul 2025 03:21:23 UTC

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.