Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 507 [Rate centres in NPA 507] [Dial plan for NPA 507]

NXX: 303

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
507-303 A Windom MN OWTNMNAMGMD  4587 CONSOLIDATED COMMUNICATIONS ENTERPRISE SVCS-MN 620      
507-303 3 Windom MN   145J TERRA NOVA TELECOM INC. 620   2025-09-05   
507-303 7 Windom MN OWTNMNAMGMD  4587 CONSOLIDATED COMMUNICATIONS ENTERPRISE SVCS-MN 620      
507-303 8 Windom MN ROCHMNROXXX  5816 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MN 620   2022-10-19   

Last updated: Thu, 05 Feb 2026 23:41:55 UTC

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