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: 350 [Rate centres in NPA 350] [Dial plan for NPA 350]

<< 1 2 3 4 5 6 7

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
350-999 8 Gustine CA SKTNCACZDS2  373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 738   2022-12-05   
350-999 9 Gustine CA   145J TERRA NOVA TELECOM INC. 738   2022-12-04   

<< 1 2 3 4 5 6 7

Last updated: Tue, 07 Oct 2025 16:47:53 UTC

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.