Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

NPA: 509 [Rate centres in NPA 509] [Dial plan for NPA 509]

NXX: 855

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
509-855 A Moses Lake WA SPKNWA01XUX  6121 LEVEL 3 COMMUNICATIONS, LLC - WA 676      
509-855 0 Moses Lake WA MLWDWAAA2MD  6010 NEW CINGULAR WIRELESS PCS, LLC 676   2013-09-16   
509-855 1 Moses Lake WA MLWDWAAA2MD  6010 NEW CINGULAR WIRELESS PCS, LLC 676   2004-03-09   
509-855 2 Moses Lake WA MLWDWAAA2MD  6010 NEW CINGULAR WIRELESS PCS, LLC 676   2004-10-13   
509-855 3 Moses Lake WA MLWDWAAA2MD  6010 NEW CINGULAR WIRELESS PCS, LLC 676   2005-01-18   
509-855 4 Moses Lake WA SPKNWA01XUX  6121 LEVEL 3 COMMUNICATIONS, LLC - WA 676   2002-09-09   
509-855 5 Moses Lake WA SPKNWA01XUX  6121 LEVEL 3 COMMUNICATIONS, LLC - WA 676   2005-07-01   
509-855 6 Moses Lake WA MLWDWAAA2MD  6010 NEW CINGULAR WIRELESS PCS, LLC 676   2003-04-02   
509-855 7 Moses Lake WA SPKNWA01XUX  6121 LEVEL 3 COMMUNICATIONS, LLC - WA 676   2005-07-01   
509-855 8 Moses Lake WA MLWDWAAA2MD  6010 NEW CINGULAR WIRELESS PCS, LLC 676   2008-10-20   
509-855 9 Moses Lake WA SPKNWA01XXX  483E ONVOY, LLC - WA 676   2010-11-17   

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.