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: 712

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
507-712 A Rochester MN   824J OPENTACT INC. 620   2026-07-25   
507-712 2 Rochester MN   824J OPENTACT INC. 620   2026-07-25   

Last updated: Tue, 16 Jun 2026 00:09:45 UTC

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