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: CHHLWAAC0MD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
360-208 A South Bend WA 6270 UNITED STATES CELLULAR - WA 674      
360-401 A Shelton WA 6270 UNITED STATES CELLULAR - WA 674      
360-520 A Chehalis WA 6270 UNITED STATES CELLULAR - WA 674      
360-590 A Aberdeen WA 6270 UNITED STATES CELLULAR - WA 674      
360-591 A Aberdeen WA 6270 UNITED STATES CELLULAR - WA 674      
360-861 A Elma WA 6270 UNITED STATES CELLULAR - WA 674      
360-880 A Chehalis WA 6270 UNITED STATES CELLULAR - WA 674      
360-996 A Chehalis WA 6270 UNITED STATES CELLULAR - WA 674      

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

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