Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 319 [Rate centres in NPA 319] [Dial plan for NPA 319]

NXX: 418

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
319-418 A Grundy Center IA   346F HEART OF IOWA VENTURES, L.L.C. - IA 635   2025-09-28   
319-418 8 Grundy Center IA   346F HEART OF IOWA VENTURES, L.L.C. - IA 635   2025-09-28   

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

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