Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 307 [Rate centres in NPA 307] [Dial plan for NPA 307]

NXX: 507

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
307-507 A Cheyenne WY   953H WIDE VOICE, LLC - WY 654   2025-05-30   
307-507 1 Cheyenne WY   953H WIDE VOICE, LLC - WY 654   2025-05-30   

Last updated: Sat, 05 Apr 2025 03:03:23 UTC

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