Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 206 [Rate centres in NPA 206] [Dial plan for NPA 206]

NXX: 331

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
206-331 A Seattle WA PLSBWAXXX0X  6010 NEW CINGULAR WIRELESS PCS, LLC 674      
206-331 0 Seattle WA   6010 NEW CINGULAR WIRELESS PCS, LLC 674      
206-331 1 Seattle WA   6010 NEW CINGULAR WIRELESS PCS, LLC 674      
206-331 2 Seattle WA   6010 NEW CINGULAR WIRELESS PCS, LLC 674      
206-331 3 Seattle WA   6121 LEVEL 3 COMMUNICATIONS, LLC - WA 674   2004-03-16   
206-331 4 Seattle WA   6121 LEVEL 3 COMMUNICATIONS, LLC - WA 674   2004-09-14   
206-331 5 Seattle WA   6529 T-MOBILE USA, INC. 674   2004-12-12   
206-331 6 Seattle WA   6529 T-MOBILE USA, INC. 674   2005-02-12   
206-331 7 Seattle WA   6529 T-MOBILE USA, INC. 674   2005-02-12   
206-331 8 Seattle WA   6529 T-MOBILE USA, INC. 674   2004-11-08   
206-331 9 Seattle WA   6529 T-MOBILE USA, INC. 674   2005-02-12   

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

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