Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 414 [Rate centres in NPA 414] [Dial plan for NPA 414]

NXX: 370

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
414-370 A Milwaukee Zone 1 WI MILWWIAUX7Y  939H COMMIO, LLC 356   2024-05-09   
414-370 0 Milwaukee Zone 1 WI   939H COMMIO, LLC 356   2024-05-09   
414-370 1 Milwaukee Zone 1 WI   939H COMMIO, LLC 356   2024-05-09   
414-370 2 Milwaukee Zone 1 WI   939H COMMIO, LLC 356   2024-05-09   
414-370 3 Milwaukee Zone 1 WI   939H COMMIO, LLC 356   2024-05-09   
414-370 4 Milwaukee Zone 1 WI   939H COMMIO, LLC 356   2024-05-09   
414-370 5 Milwaukee Zone 1 WI   939H COMMIO, LLC 356   2024-05-09   
414-370 6 Milwaukee Zone 1 WI   939H COMMIO, LLC 356   2024-05-09   
414-370 7 Milwaukee Zone 1 WI   939H COMMIO, LLC 356   2024-05-09   
414-370 8 Milwaukee Zone 1 WI   624H ONVOY SPECTRUM, LLC 356   2024-05-10   
414-370 9 Milwaukee Zone 1 WI   624H ONVOY SPECTRUM, LLC 356   2024-05-10   

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

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