Local Calling Guide

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Dorchester, IL

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
618-362 A DRCHILXERS0  1055 FRONTIER COMMUNICATIONS-MIDLAND, INC. 520      
618-362 0   1055 FRONTIER COMMUNICATIONS-MIDLAND, INC. 520      
618-362 1   1055 FRONTIER COMMUNICATIONS-MIDLAND, INC. 520      
618-362 2   984E BANDWIDTH.COM CLEC, LLC - IL 520   2022-04-27   
618-362 3   224C ONVOY, LLC 520   2019-07-29   
618-362 4   224C ONVOY, LLC 520   2019-07-29   
618-362 5   073H TELNYX LLC 520   2020-07-06   
618-362 6   1055 FRONTIER COMMUNICATIONS-MIDLAND, INC. 520      
618-362 7   508J CENTURYLINK COMMUNICATIONS, LLC 520   2016-01-21   
618-362 8   224C ONVOY, LLC 520   2018-07-29   
618-362 9   1055 FRONTIER COMMUNICATIONS-MIDLAND, INC. 520      
618-903 A STLSMOGZ00Z  490J DISH WIRELESS, LLC 520      
618-903 0   624H ONVOY SPECTRUM, LLC 520   2025-01-04   
618-903 9   490J DISH WIRELESS, LLC 520   2023-02-05   

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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