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: 859 [Rate centres in NPA 859] [Dial plan for NPA 859]

NXX: 577

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
859-577 A Winchester KY   896E ONVOY, LLC - KY 466   2025-04-08   
859-577 7 Winchester KY WNCHKYMAEMD  896E ONVOY, LLC - KY 466   2016-09-12   
859-577 8 Winchester KY WNCHKYMAEMD  896E ONVOY, LLC - KY 466   2016-09-12   
859-577 9 Winchester KY WNCHKYMAEMD  896E ONVOY, LLC - KY 466   2016-09-12   

Last updated: Thu, 20 Nov 2025 13:34:34 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.