Local Calling Guide

Area code/prefix search

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NPA: 507 [Rate centres in NPA 507] [Dial plan for NPA 507]

NXX: 622

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
507-622 A Adams MN ROCHMNROUMD  184D ONVOY, LLC - MN 620      
507-622 1 Adams MN ROCHMNROUMD  184D ONVOY, LLC - MN 620      
507-622 2 Adams MN   145J TERRA NOVA TELECOM INC. 620   2025-08-30   

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

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