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: 288

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
307-288 A Evanston WY CHYNWYMAEMD  9416 LEVEL 3 COMMUNICATIONS, LLC - WY 654      
307-288 0 Evanston WY   081F BANDWIDTH.COM CLEC, LLC - WY 654   2008-11-29   
307-288 1 Evanston WY   450F ONVOY, LLC - WY 654   2012-12-17   
307-288 2 Evanston WY   450F ONVOY, LLC - WY 654   2012-12-17   
307-288 3 Evanston WY   450F ONVOY, LLC - WY 654   2019-08-09   
307-288 4 Evanston WY   9416 LEVEL 3 COMMUNICATIONS, LLC - WY 654   2020-08-27   
307-288 5 Evanston WY   9416 LEVEL 3 COMMUNICATIONS, LLC - WY 654   2005-02-26   
307-288 6 Evanston WY   450F ONVOY, LLC - WY 654   2021-03-02   
307-288 7 Evanston WY   450F ONVOY, LLC - WY 654   2006-11-05   
307-288 8 Evanston WY   6010 NEW CINGULAR WIRELESS PCS, LLC 654   2025-03-22   
307-288 9 Evanston WY   581H AIRUS, INC. - WY 654   2018-02-26   

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

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