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: 940

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
509-940 A Richland WA KNWCWAXAX3X  483E ONVOY, LLC - WA 676      
509-940 0 Richland WA KNWCWAXAX3X  483E ONVOY, LLC - WA 676      
509-940 1 Richland WA KNWCWAXAX3X  483E ONVOY, LLC - WA 676      
509-940 2 Richland WA KNWCWAXAX3X  483E ONVOY, LLC - WA 676      
509-940 3 Richland WA KNWCWAXAX3X  483E ONVOY, LLC - WA 676      
509-940 4 Richland WA KNWCWAXAX3X  483E ONVOY, LLC - WA 676      
509-940 5 Richland WA   792K CHARTER IP ENABLED SERVICES, LLC 676   2017-07-23   
509-940 6 Richland WA KNWCWAXAX3X  483E ONVOY, LLC - WA 676   2017-10-06   
509-940 7 Richland WA SPKNWA01XDY  5812 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 676   2016-10-16   
509-940 8 Richland WA SPKNWA01XDY  5812 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 676   2024-11-27   
509-940 9 Richland WA   792K CHARTER IP ENABLED SERVICES, LLC 676   2017-12-03   

Last updated: Sun, 27 Apr 2025 12:48:38 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.