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: 310

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
270-310 A Corydon KY   793K TWC IP ENABLED SERVICES, LLC 464      
270-310 0 Corydon KY   793K TWC IP ENABLED SERVICES, LLC 464   2012-02-01   
270-310 1 Corydon KY   073H TELNYX LLC 464   2020-07-02   
270-310 2 Corydon KY   896E ONVOY, LLC - KY 464   2020-10-26   
270-310 3 Corydon KY   896E ONVOY, LLC - KY 464   2020-10-26   
270-310 4 Corydon KY   490J DISH WIRELESS, LLC 464   2023-01-01   
270-310 5 Corydon KY   896E ONVOY, LLC - KY 464   2021-03-05   
270-310 6 Corydon KY   896E ONVOY, LLC - KY 464   2021-07-05   
270-310 7 Corydon KY   896E ONVOY, LLC - KY 464   2021-07-05   
270-310 8 Corydon KY   896E ONVOY, LLC - KY 464   2021-10-08   
270-310 9 Corydon KY   896E ONVOY, LLC - KY 464   2023-07-28   

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

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.