Local Calling Guide

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Search area code/prefix (NPA/NXX)
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NPA: 509 [Rate centres in NPA 509] [Dial plan for NPA 509]

NXX: 553

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
509-553 A Colfax WA EWNCWA270MD  6529 T-MOBILE USA, INC. 676      
509-553 0 Colfax WA   483E ONVOY, LLC - WA 676   2016-04-11   
509-553 1 Colfax WA   5812 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 676   2020-04-14   
509-553 2 Colfax WA   6010 NEW CINGULAR WIRELESS PCS, LLC 676   2008-09-27   
509-553 3 Colfax WA   5812 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 676   2015-03-13   
509-553 4 Colfax WA   6010 NEW CINGULAR WIRELESS PCS, LLC 676   2019-04-24   
509-553 5 Colfax WA   483E ONVOY, LLC - WA 676   2016-05-22   
509-553 6 Colfax WA   6529 T-MOBILE USA, INC. 676   2015-09-04   
509-553 7 Colfax WA   508J CENTURYLINK COMMUNICATIONS, LLC 676   2015-01-28   
509-553 8 Colfax WA   483E ONVOY, LLC - WA 676   2017-10-01   
509-553 9 Colfax WA   6529 T-MOBILE USA, INC. 676      

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

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