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: 508

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
414-508 A Milwaukee Zone 1 WI   225C ONVOY, LLC - WI 356   2025-11-23   
414-508 0 Milwaukee Zone 1 WI   225C ONVOY, LLC - WI 356   2025-11-23   
414-508 1 Milwaukee Zone 1 WI   225C ONVOY, LLC - WI 356   2025-11-23   
414-508 2 Milwaukee Zone 1 WI   225C ONVOY, LLC - WI 356   2025-11-23   
414-508 3 Milwaukee Zone 1 WI   225C ONVOY, LLC - WI 356   2025-11-23   
414-508 4 Milwaukee Zone 1 WI   225C ONVOY, LLC - WI 356   2025-11-23   
414-508 8 Milwaukee Zone 1 WI   225C ONVOY, LLC - WI 356   2025-11-24   

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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