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: 318 [Rate centres in NPA 318] [Dial plan for NPA 318]

NXX: 546

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
318-546 A Cotton Valley LA SHPTLAMAX6Y  3232 LEVEL 3 COMMUNICATIONS, LLC - LA 486      
318-546 0 Cotton Valley LA PLDNLAXA3MD  749E ONVOY, LLC - LA 486   2023-09-28   
318-546 2 Cotton Valley LA SHPTLAMAX6Y  3232 LEVEL 3 COMMUNICATIONS, LLC - LA 486   2017-08-12   
318-546 3 Cotton Valley LA PLDNLAXA3MD  749E ONVOY, LLC - LA 486   2020-01-10   
318-546 4 Cotton Valley LA PLDNLAXA3MD  749E ONVOY, LLC - LA 486   2021-02-19   
318-546 5 Cotton Valley LA PLDNLAXA3MD  749E ONVOY, LLC - LA 486   2023-02-26   
318-546 6 Cotton Valley LA PLDNLAXA3MD  749E ONVOY, LLC - LA 486   2021-04-05   

Last updated: Fri, 22 Mar 2024 03:02:44 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.