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: 261

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
350-261 A Modesto CA SKTNCA01XFY  649C ONVOY, LLC - CA 738   2026-07-20   
350-261 0 Modesto CA SKTNCA01XFY  649C ONVOY, LLC - CA 738   2026-07-20   
350-261 1 Modesto CA SKTNCA01XFY  649C ONVOY, LLC - CA 738   2026-07-20   
350-261 2 Modesto CA   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 738   2026-10-16   
350-261 3 Modesto CA   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 738   2026-11-12   
350-261 4 Modesto CA SKTNCA01XFY  649C ONVOY, LLC - CA 738   2026-07-21   
350-261 5 Modesto CA SKTNCA01XFY  649C ONVOY, LLC - CA 738   2026-07-21   
350-261 6 Modesto CA SKTNCA01XFY  649C ONVOY, LLC - CA 738   2026-07-21   
350-261 7 Modesto CA SKTNCA01XFY  649C ONVOY, LLC - CA 738   2026-07-21   
350-261 8 Modesto CA   649C ONVOY, LLC - CA 738   2026-07-21   
350-261 9 Modesto CA   649C ONVOY, LLC - CA 738   2026-07-21   

Last updated: Sat, 01 Aug 2026 03:19:33 UTC

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.