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: 777

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
507-777 A Woodstock MN RTTNMNXRDS1  1510 WOODSTOCK TEL. CO. 620      

Last updated: Sun, 07 Dec 2025 22:02:11 UTC

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