Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 318 [Rate centres in NPA 318] [Dial plan for NPA 318]

NXX: 454

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
318-454 A Shreveport LA   128L E. RITTER COMMUNICATIONS, LLC 486   2026-02-13   
318-454 1 Shreveport LA   128L E. RITTER COMMUNICATIONS, LLC 486   2026-02-13   

Last updated: Sat, 21 Mar 2026 23:53:39 UTC

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