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: 231

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
507-231 A Janesville MN JNVLMNACRL0  8581 CONSOLIDATED COMMUNICATIONS ENTERPRISE SVCS-MN 620      

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

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