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: 579

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
509-579 A Kennewick WA YAKMWAWE7MD  508J CENTURYLINK COMMUNICATIONS, LLC 676      
509-579 0 Kennewick WA KNWCWAII3MD  814D CHARTER FIBERLINK WA - CCVII, LLC - WA 676      
509-579 1 Kennewick WA MLWDWAAA2MD  6010 NEW CINGULAR WIRELESS PCS, LLC 676      
509-579 2 Kennewick WA MLWDWAAA2MD  6010 NEW CINGULAR WIRELESS PCS, LLC 676      
509-579 3 Kennewick WA SPKNWA01XUX  6121 LEVEL 3 COMMUNICATIONS, LLC - WA 676      
509-579 4 Kennewick WA KNWCWAII3MD  814D CHARTER FIBERLINK WA - CCVII, LLC - WA 676      
509-579 5 Kennewick WA KNWCWAII3MD  814D CHARTER FIBERLINK WA - CCVII, LLC - WA 676      
509-579 6 Kennewick WA SPKNWA01XDY  5812 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 676      
509-579 7 Kennewick WA YAKMWAWE7MD  508J CENTURYLINK COMMUNICATIONS, LLC 676      
509-579 8 Kennewick WA KNWCWAXA1MD  6529 T-MOBILE USA, INC. 676      
509-579 9 Kennewick WA MLWDWAAA2MD  6010 NEW CINGULAR WIRELESS PCS, LLC 676      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.