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: 360 [Rate centres in NPA 360] [Dial plan for NPA 360]

NXX: 231

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
360-231 A Yale WA YALEWAXXRP0  2427 LEWIS RIVER TEL. CO., INC. 672   2024-02-18   
360-231 0 Yale WA   145J TERRA NOVA TELECOM INC. 672   2025-07-11   
360-231 4 Yale WA YALEWAXXRP0  2427 LEWIS RIVER TEL. CO., INC. 672      

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

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.