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: 275

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
380-275 A Lockbourne OH CLMBOHLT1MD  464C ONVOY, LLC - OH 324   2024-05-12   
380-275 0 Lockbourne OH CLMBOHLT1MD  464C ONVOY, LLC - OH 324   2024-05-12   
380-275 1 Lockbourne OH CLMBOHLT1MD  464C ONVOY, LLC - OH 324   2024-05-13   
380-275 8 Lockbourne OH CLMBOH1143Z  624H ONVOY SPECTRUM, LLC 324   2024-08-03   

Last updated: Sun, 01 Jun 2025 02:18:11 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.