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: 270 [Rate centres in NPA 270] [Dial plan for NPA 270]

NXX: 671

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
270-671 A Clay KY   896E ONVOY, LLC - KY 464      
270-671 1 Clay KY   896E ONVOY, LLC - KY 464   2021-03-07   
270-671 7 Clay KY   516C AT&T CORP. 464   2011-11-17   
270-671 9 Clay KY   896E ONVOY, LLC - KY 464   2017-03-21   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.