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: 683

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
307-683 A Sheridan WY STRYWYMARS1  9636 QWEST CORPORATION 654      
307-683 0 Sheridan WY   450F ONVOY, LLC - WY 654   2012-12-17   
307-683 1 Sheridan WY   581H AIRUS, INC. - WY 654   2016-11-28   
307-683 2 Sheridan WY   9636 QWEST CORPORATION 654      
307-683 3 Sheridan WY   9636 QWEST CORPORATION 654      
307-683 4 Sheridan WY   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 654   2010-11-01   
307-683 5 Sheridan WY   450F ONVOY, LLC - WY 654   2018-11-02   
307-683 6 Sheridan WY   6010 NEW CINGULAR WIRELESS PCS, LLC 654   2010-11-13   
307-683 7 Sheridan WY   6566 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY 654   2012-02-12   
307-683 8 Sheridan WY   450F ONVOY, LLC - WY 654   2018-11-02   
307-683 9 Sheridan WY   450F ONVOY, LLC - WY 654   2019-09-07   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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