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: 779

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
509-779 A Curlew WA CRLWWAXARS1  4423 ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER 676      
509-779 0 Curlew WA CRLWWAXARS1  4423 ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER 676      
509-779 1 Curlew WA SPKNWA01XXX  483E ONVOY, LLC - WA 676   2021-06-26   
509-779 2 Curlew WA SPKNWA01XUX  6121 LEVEL 3 COMMUNICATIONS, LLC - WA 676   2004-06-05   
509-779 4 Curlew WA CRLWWAXARS1  4423 ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER 676      
509-779 5 Curlew WA SPKNWAOBDS1  663D ELTOPIA COMMUNICATIONS, LLC - WA 676   2008-06-28   
509-779 6 Curlew WA SPKNWA01XXX  483E ONVOY, LLC - WA 676   2007-04-20   
509-779 7 Curlew WA YAKMWAWE7MD  508J CENTURYLINK COMMUNICATIONS, LLC 676   2015-01-23   
509-779 8 Curlew WA SPKNWA01XXX  483E ONVOY, LLC - WA 676   2017-09-15   
509-779 9 Curlew WA SPKNWA01XIY  506J TWILIO INTERNATIONAL, INC. 676   2021-01-28   

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.