Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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OCN: 577F RINGSQUARED TELECOM LLC

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
206-543 A Seattle WA STTLWADJDS1  674      
206-616 A Seattle WA STTLWADJDS1  674      

Last updated: Wed, 04 Mar 2026 03:00:52 UTC

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