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: 478

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
270-478 A Owensboro KY OWBOKYMAXZX  793K TWC IP ENABLED SERVICES, LLC 464      
270-478 0 Owensboro KY OWBOKYMM0MD  939H COMMIO, LLC 464   2024-02-25   
270-478 1 Owensboro KY OWBOKYMAXZX  793K TWC IP ENABLED SERVICES, LLC 464   2016-02-11   
270-478 4 Owensboro KY OWBOKYMAXZX  793K TWC IP ENABLED SERVICES, LLC 464   2012-02-01   
270-478 5 Owensboro KY OWBOKYMAXZX  793K TWC IP ENABLED SERVICES, LLC 464   2015-07-30   
270-478 8 Owensboro KY OWBOKYMM0MD  939H COMMIO, LLC 464   2024-02-25   
270-478 9 Owensboro KY OWBOKYMM0MD  939H COMMIO, LLC 464   2024-02-25   

Last updated: Sat, 01 Aug 2026 03:19:33 UTC

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.