Local Calling Guide

Area code/prefix search

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

NXX: 391

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
509-391 A Sunnyside WA SNSDWAXXOMD  6529 T-MOBILE USA, INC. 676      
509-391 0 Sunnyside WA   6529 T-MOBILE USA, INC. 676      
509-391 1 Sunnyside WA   5562 METROPCS, INC. 676   2016-01-03   
509-391 2 Sunnyside WA   6270 UNITED STATES CELLULAR - WA 676   2018-08-20   
509-391 3 Sunnyside WA   6270 UNITED STATES CELLULAR - WA 676   2017-09-25   
509-391 4 Sunnyside WA   6010 NEW CINGULAR WIRELESS PCS, LLC 676   2016-10-19   
509-391 5 Sunnyside WA   6010 NEW CINGULAR WIRELESS PCS, LLC 676   2003-10-12   
509-391 6 Sunnyside WA   5562 METROPCS, INC. 676      
509-391 7 Sunnyside WA   6529 T-MOBILE USA, INC. 676      
509-391 8 Sunnyside WA   6529 T-MOBILE USA, INC. 676   2012-05-09   
509-391 9 Sunnyside WA   6010 NEW CINGULAR WIRELESS PCS, LLC 676   2004-05-20   

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

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