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: 440

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
712-440 A Peterson IA RCCYIAXCHMD  221F ONVOY, LLC - IA 630      
712-440 0 Peterson IA RCCYIAXCHMD  221F ONVOY, LLC - IA 630   2023-09-10   
712-440 1 Peterson IA RCCYIAXCHMD  221F ONVOY, LLC - IA 630   2023-07-14   
712-440 4 Peterson IA   145J TERRA NOVA TELECOM INC. 630   2025-05-17   
712-440 8 Peterson IA RCCYIAXCXMD  624H ONVOY SPECTRUM, LLC 630   2024-03-17   

Last updated: Sun, 27 Apr 2025 12:48:38 UTC

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