Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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Upton, WY

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
307-468 A UPTNWYXCRS1  3410 RT COMMUNICATIONS 654      
307-490 A CSPRWYES6MD  792K CHARTER IP ENABLED SERVICES, LLC 654   2026-04-26   
307-490 1 CSPRWYES6MD  792K CHARTER IP ENABLED SERVICES, LLC 654   2026-04-26   

Last updated: Tue, 01 Sep 2026 00:40:05 UTC

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