Local Calling Guide

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

NXX: 487

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
712-487 A Treynor IA TRYNIAXORS4  1127 FRONTIER COMMUNICATIONS OF IOWA, INC. 644      
712-487 0 Treynor IA   1127 FRONTIER COMMUNICATIONS OF IOWA, INC. 644      
712-487 1 Treynor IA   444G AUREON COMMUNICATIONS, LLC 644   2013-10-07   
712-487 2 Treynor IA   156C BTC, INC. - IA 644   2022-04-02   
712-487 3 Treynor IA   1127 FRONTIER COMMUNICATIONS OF IOWA, INC. 644      
712-487 4 Treynor IA   221F ONVOY, LLC - IA 644   2018-11-17   
712-487 5 Treynor IA   221F ONVOY, LLC - IA 644   2021-11-17   
712-487 7 Treynor IA   508J CENTURYLINK COMMUNICATIONS, LLC 644   2017-10-31   
712-487 8 Treynor IA   221F ONVOY, LLC - IA 644   2021-06-11   
712-487 9 Treynor IA   1127 FRONTIER COMMUNICATIONS OF IOWA, INC. 644      

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

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