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: 404

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
307-404 A Medicine Bow WY CHYNWYMAX6X  6010 NEW CINGULAR WIRELESS PCS, LLC 654      
307-404 5 Medicine Bow WY CHYNWYMAEMD  9416 LEVEL 3 COMMUNICATIONS, LLC - WY 654   2023-01-27   
307-404 8 Medicine Bow WY CHYNWYMAX6X  6010 NEW CINGULAR WIRELESS PCS, LLC 654   2018-07-22   
307-404 9 Medicine Bow WY CHYNWYMAX6X  6010 NEW CINGULAR WIRELESS PCS, LLC 654   2018-07-22   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

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