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: 380 [Rate centres in NPA 380] [Dial plan for NPA 380]

NXX: 388

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
380-388 A Alton OH CLMBOHLT1MD  464C ONVOY, LLC - OH 324   2021-04-05   
380-388 0 Alton OH CLMDOH449MD  939H COMMIO LLC 324   2021-06-20   
380-388 1 Alton OH CLMDOH449MD  939H COMMIO LLC 324   2021-06-20   
380-388 2 Alton OH CLMDOH449MD  939H COMMIO LLC 324   2021-06-20   
380-388 3 Alton OH CLMBOHLT1MD  464C ONVOY, LLC - OH 324   2021-04-05   
380-388 4 Alton OH CLMBOHLT1MD  464C ONVOY, LLC - OH 324   2021-04-05   
380-388 5 Alton OH CLMBOHLT1MD  464C ONVOY, LLC - OH 324   2021-04-05   
380-388 6 Alton OH CLMBOHLT1MD  464C ONVOY, LLC - OH 324   2021-04-05   
380-388 7 Alton OH WOTNOH88X0Y  506J TWILIO INTERNATIONAL INC 324   2021-07-08   
380-388 8 Alton OH CLMBOHLT1MD  464C ONVOY, LLC - OH 324   2021-04-05   
380-388 9 Alton OH CLMDOH449MD  939H COMMIO LLC 324   2021-06-20   

Last updated: Fri, 13 May 2022 22:16:13 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.