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: 400

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
318-400 A Shreveport LA SHPTLAMAXRZ  6916 ELISKA WIRELESS VENTURES SUBSIDIARY I, LLC 486      
318-400 0 Shreveport LA   145J TERRA NOVA TELECOM INC. 486   2025-08-29   

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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