Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 360 [Rate centres in NPA 360] [Dial plan for NPA 360]

NXX: 554

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
360-554 A Port Townsend WA STTNWAHODSC  6121 LEVEL 3 COMMUNICATIONS, LLC - WA 674      
360-554 0 Port Townsend WA   6121 LEVEL 3 COMMUNICATIONS, LLC - WA 674      
360-554 2 Port Townsend WA   159F PEERLESS NETWORK OF WASHINGTON, LLC - WA 674   2022-06-25   
360-554 4 Port Townsend WA   6121 LEVEL 3 COMMUNICATIONS, LLC - WA 674      
360-554 5 Port Townsend WA   6121 LEVEL 3 COMMUNICATIONS, LLC - WA 674      
360-554 8 Port Townsend WA   6529 T-MOBILE USA, INC. 674   2024-01-24   
360-554 9 Port Townsend WA   6529 T-MOBILE USA, INC. 674   2024-01-24   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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