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: 520

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
360-520 A Chehalis WA CHHLWAAC0MD  6270 UNITED STATES CELLULAR - WA 674      
360-520 0 Chehalis WA   6270 UNITED STATES CELLULAR - WA 674      
360-520 1 Chehalis WA   6270 UNITED STATES CELLULAR - WA 674      
360-520 2 Chehalis WA   6270 UNITED STATES CELLULAR - WA 674      
360-520 3 Chehalis WA   6270 UNITED STATES CELLULAR - WA 674      
360-520 4 Chehalis WA   6270 UNITED STATES CELLULAR - WA 674      
360-520 5 Chehalis WA   6270 UNITED STATES CELLULAR - WA 674      
360-520 6 Chehalis WA   6270 UNITED STATES CELLULAR - WA 674      
360-520 7 Chehalis WA   6270 UNITED STATES CELLULAR - WA 674      
360-520 8 Chehalis WA   145J TERRA NOVA TELECOM INC. 674   2023-11-16   
360-520 9 Chehalis WA   6270 UNITED STATES CELLULAR - WA 674      

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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