Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 712 [Rate centres in NPA 712] [Dial plan for NPA 712]

NXX: 936

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
712-936 A Storm Lake IA   515J IP HORIZON LLC 630   2025-11-14   
712-936 1 Storm Lake IA   515J IP HORIZON LLC 630   2025-11-14   

Last updated: Tue, 07 Oct 2025 16:47:53 UTC

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