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: 316

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
712-316 A Washta IA SXCYIADT9MD  221F ONVOY, LLC - IA 630      
712-316 0 Washta IA   073H TELNYX LLC 630   2020-05-29   
712-316 1 Washta IA   221F ONVOY, LLC - IA 630   2023-06-09   
712-316 2 Washta IA   221F ONVOY, LLC - IA 630   2018-10-26   
712-316 3 Washta IA   221F ONVOY, LLC - IA 630   2019-07-25   
712-316 4 Washta IA   221F ONVOY, LLC - IA 630   2019-07-25   
712-316 5 Washta IA   221F ONVOY, LLC - IA 630   2021-03-08   
712-316 6 Washta IA   508J CENTURYLINK COMMUNICATIONS, LLC 630   2019-05-24   
712-316 7 Washta IA   221F ONVOY, LLC - IA 630   2020-10-02   
712-316 8 Washta IA   221F ONVOY, LLC - IA 630   2021-03-08   

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

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