Local Calling Guide

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NPA: 712 [Rate centres in NPA 712] [Dial plan for NPA 712]

NXX: 404

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
712-404 A Harlan IA OMAHNENWGT1  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 644      
712-404 0 Harlan IA   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 644   2006-02-24   
712-404 1 Harlan IA   593K MCC TELEPHONY LLC 644   2010-05-07   
712-404 3 Harlan IA   6266 UNITED STATES CELLULAR - IA 644   2020-09-15   
712-404 4 Harlan IA   145J TERRA NOVA TELECOM INC. 644   2025-05-31   
712-404 5 Harlan IA   6266 UNITED STATES CELLULAR - IA 644   2022-08-02   
712-404 8 Harlan IA   6266 UNITED STATES CELLULAR - IA 644   2010-09-16   
712-404 9 Harlan IA   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 644   2017-11-30   

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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