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: 203

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
318-203 A Shreveport LA SHPTLAMA02Z  624H ONVOY SPECTRUM, LLC 486      
318-203 0 Shreveport LA SHPTLAMA02Z  624H ONVOY SPECTRUM, LLC 486   2022-12-17   
318-203 1 Shreveport LA SHPTLAMA02Z  624H ONVOY SPECTRUM, LLC 486   2022-12-17   
318-203 2 Shreveport LA SHPTLAMA02Z  624H ONVOY SPECTRUM, LLC 486   2022-12-17   
318-203 3 Shreveport LA SHPTLAMA02Z  624H ONVOY SPECTRUM, LLC 486   2022-12-17   
318-203 4 Shreveport LA SHPTLAMA02Z  624H ONVOY SPECTRUM, LLC 486   2022-12-17   
318-203 5 Shreveport LA SHPTLAMAXZY  749E ONVOY, LLC - LA 486   2022-12-17   
318-203 7 Shreveport LA SHPTLAMA02Z  624H ONVOY SPECTRUM, LLC 486   2022-12-17   
318-203 8 Shreveport LA SHPTLAMA02Z  624H ONVOY SPECTRUM, LLC 486   2022-12-17   
318-203 9 Shreveport LA SHPTLAMA02Z  624H ONVOY SPECTRUM, LLC 486   2022-12-17   

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

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