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: 531

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
360-531 A Port Townsend WA TACNWADNCM6  6010 NEW CINGULAR WIRELESS PCS, LLC 674      
360-531 0 Port Townsend WA   6010 NEW CINGULAR WIRELESS PCS, LLC 674      
360-531 1 Port Townsend WA   6010 NEW CINGULAR WIRELESS PCS, LLC 674      
360-531 2 Port Townsend WA   6010 NEW CINGULAR WIRELESS PCS, LLC 674      
360-531 3 Port Townsend WA   6010 NEW CINGULAR WIRELESS PCS, LLC 674      
360-531 4 Port Townsend WA   6010 NEW CINGULAR WIRELESS PCS, LLC 674   2010-09-29   
360-531 6 Port Townsend WA   483E ONVOY, LLC - WA 674   2021-02-10   
360-531 7 Port Townsend WA   483E ONVOY, LLC - WA 674   2021-02-10   

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

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