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: 503

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
206-503 A Seattle WA STTLWA060MD  6529 T-MOBILE USA, INC. 674      
206-503 0 Seattle WA   5812 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 674   2017-01-31   
206-503 1 Seattle WA   5812 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 674   2017-02-28   
206-503 2 Seattle WA   318J COMCAST IP PHONE, LLC 674   2017-01-20   
206-503 3 Seattle WA   5812 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 674   2017-03-31   
206-503 4 Seattle WA   5812 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 674   2017-04-28   
206-503 5 Seattle WA   5812 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 674   2017-05-31   
206-503 6 Seattle WA   6529 T-MOBILE USA, INC. 674   2017-01-19   
206-503 7 Seattle WA   6529 T-MOBILE USA, INC. 674   2017-01-19   
206-503 8 Seattle WA   6529 T-MOBILE USA, INC. 674   2017-01-19   
206-503 9 Seattle WA   6529 T-MOBILE USA, INC. 674   2017-01-19   

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

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