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.

Amboy, WA

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
360-247 A AMBYWAXARP0  2427 LEWIS RIVER TEL. CO., INC. 672   2024-02-18   
360-247 4   145J TERRA NOVA TELECOM INC. 672   2025-07-11   
360-247 5 AMBYWAXARP0  2427 LEWIS RIVER TEL. CO., INC. 672      
360-247 6 AMBYWAXARP0  2427 LEWIS RIVER TEL. CO., INC. 672      
360-247 7 AMBYWAXARP0  2427 LEWIS RIVER TEL. CO., INC. 672      

Last updated: Tue, 15 Jul 2025 18:46:49 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.