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: 223

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
509-223 A Loomis WA LOMSWAXARS2  4423 ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER 676      
509-223 0 Loomis WA   483E ONVOY, LLC - WA 676   2021-11-20   
509-223 1 Loomis WA   483E ONVOY, LLC - WA 676   2022-05-12   
509-223 2 Loomis WA   483E ONVOY, LLC - WA 676   2017-10-01   
509-223 3 Loomis WA   4423 ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER 676      
509-223 4 Loomis WA   483E ONVOY, LLC - WA 676   2022-07-25   
509-223 6 Loomis WA   483E ONVOY, LLC - WA 676   2021-05-07   
509-223 7 Loomis WA   483E ONVOY, LLC - WA 676   2007-04-20   
509-223 8 Loomis WA   6121 LEVEL 3 COMMUNICATIONS, LLC - WA 676   2015-01-23   
509-223 9 Loomis WA   483E ONVOY, LLC - WA 676   2022-09-04   

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.