Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 319 [Rate centres in NPA 319] [Dial plan for NPA 319]

NXX: 323

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
319-323 A Oelwein IA CDRRIADTFMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 635      
319-323 0 Oelwein IA   221F ONVOY, LLC - IA 635   2021-04-24   
319-323 1 Oelwein IA   221F ONVOY, LLC - IA 635   2021-04-24   
319-323 2 Oelwein IA   145J TERRA NOVA TELECOM INC. 635   2024-02-14   
319-323 4 Oelwein IA   221F ONVOY, LLC - IA 635   2021-03-14   
319-323 5 Oelwein IA   221F ONVOY, LLC - IA 635   2021-03-14   
319-323 6 Oelwein IA   221F ONVOY, LLC - IA 635   2021-03-14   
319-323 7 Oelwein IA   221F ONVOY, LLC - IA 635   2021-10-10   
319-323 8 Oelwein IA   221F ONVOY, LLC - IA 635   2021-10-10   
319-323 9 Oelwein IA   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 635   2020-07-31   

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

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