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: 365

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
509-365 A Lyle WA LYLEWAXARS0  4521 UNITED TELEPHONE - NORTHWEST DBA CENTURYLINK - WA 672      
509-365 0 Lyle WA LYLEWAXARS0  4521 UNITED TELEPHONE - NORTHWEST DBA CENTURYLINK - WA 672      
509-365 1 Lyle WA THDLORXADMD  7146 TELEPORT COMMUNICATIONS AMERICA, LLC - WA 672   2021-07-26   
509-365 2 Lyle WA LYLEWAXARS0  4521 UNITED TELEPHONE - NORTHWEST DBA CENTURYLINK - WA 672      
509-365 3 Lyle WA PTLGORIA7MD  6121 LEVEL 3 COMMUNICATIONS, LLC - WA 672      
509-365 4 Lyle WA LYLEWAXARS0  4521 UNITED TELEPHONE - NORTHWEST DBA CENTURYLINK - WA 672      
509-365 5 Lyle WA LYLEWAXARS0  4521 UNITED TELEPHONE - NORTHWEST DBA CENTURYLINK - WA 672      
509-365 6 Lyle WA THDLORXAFMD  483E ONVOY, LLC - WA 672   2022-01-02   
509-365 7 Lyle WA PTLDORWAXDX  508J CENTURYLINK COMMUNICATIONS, LLC 672   2013-12-10   
509-365 8 Lyle WA THDLORXA7MD  814D CHARTER FIBERLINK WA - CCVII, LLC - WA 672   2008-05-18   
509-365 9 Lyle WA PTLDORWADS2  483E ONVOY, LLC - WA 672   2023-03-03   

Last updated: Wed, 18 Jun 2025 02:30:00 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.