Local Calling Guide

Area code/prefix search

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Milton, IL

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
217-723 A MLTNILXCRS0  1015 FRONTIER NORTH, INC. - IL 376      
217-723 0   939H COMMIO, LLC 376   2023-09-11   
217-723 1   939H COMMIO, LLC 376   2023-09-11   
217-723 2   224C ONVOY, LLC 376   2020-04-19   
217-723 3   624H ONVOY SPECTRUM, LLC 376   2023-07-07   
217-723 4   1015 FRONTIER NORTH, INC. - IL 376      
217-723 5   939H COMMIO, LLC 376   2024-02-02   
217-723 6   939H COMMIO, LLC 376   2023-09-11   
217-723 7   224C ONVOY, LLC 376   2021-04-05   
217-723 8   939H COMMIO, LLC 376   2023-09-11   
217-723 9   939H COMMIO, LLC 376   2023-09-11   
447-323 A   7421 AT&T - LOCAL 376   2025-09-25   
447-323 9   7421 AT&T - LOCAL 376   2025-09-25   

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

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