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.

Switch: DWTOWAXADS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
360-372 A Dewatto WA 2423 INLAND TEL CO 674      
360-372 0 Dewatto WA 2423 INLAND TEL CO 674      
360-372 1 Dewatto WA 2423 INLAND TEL CO 674      
360-372 2 Dewatto WA 2423 INLAND TEL CO 674      
360-372 3 Dewatto WA 2423 INLAND TEL CO 674      
360-372 4 Dewatto WA 2423 INLAND TEL CO 674      
360-372 5 Dewatto WA 2423 INLAND TEL CO 674      

Last updated: Thu, 20 Nov 2025 13:34:34 UTC

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