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]

NXX: 240

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
350-240 A Turlock CA   6010 NEW CINGULAR WIRELESS PCS, LLC 738   2025-05-11   
350-240 0 Turlock CA   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 738   2025-05-12   
350-240 1 Turlock CA   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 738   2025-07-07   
350-240 2 Turlock CA   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 738   2025-08-18   
350-240 3 Turlock CA   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 738   2025-10-16   
350-240 8 Turlock CA   6010 NEW CINGULAR WIRELESS PCS, LLC 738   2025-05-11   
350-240 9 Turlock CA   6010 NEW CINGULAR WIRELESS PCS, LLC 738   2025-05-11   

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

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.