Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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Switch: STTNWAHO8MD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
206-493 A Seattle WA 671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 674      
206-493 5 Seattle WA 671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 674   2026-04-29   

Last updated: Thu, 16 Jul 2026 02:21:55 UTC

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