Local Calling Guide

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

NXX: 492

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
712-492 A Oakland IA OKLDIA070MD  860E INTERSTATE CABLEVISION COMPANY - IA 644      
712-492 0 Oakland IA   073H TELNYX LLC 644   2020-05-29   
712-492 1 Oakland IA   221F ONVOY, LLC - IA 644   2021-06-11   
712-492 2 Oakland IA   624H ONVOY SPECTRUM, LLC 644   2024-12-19   
712-492 3 Oakland IA   156C BTC, INC. - IA 644   2023-04-29   
712-492 4 Oakland IA   221F ONVOY, LLC - IA 644   2019-09-20   
712-492 8 Oakland IA   444G AUREON COMMUNICATIONS, LLC 644   2024-09-09   
712-492 9 Oakland IA   860E INTERSTATE CABLEVISION COMPANY - IA 644   2019-08-29   

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

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