Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 320 [Rate centres in NPA 320] [Dial plan for NPA 320]

NXX: 408

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
320-408 A Plato MN MPLSMNFD2MD  508J CENTURYLINK COMMUNICATIONS, LLC 628      
320-408 0 Plato MN   073H TELNYX LLC 628   2020-07-20   
320-408 1 Plato MN   184D ONVOY, LLC - MN 628   2021-06-11   
320-408 2 Plato MN   184D ONVOY, LLC - MN 628   2020-08-17   
320-408 3 Plato MN   184D ONVOY, LLC - MN 628   2016-12-18   
320-408 4 Plato MN   184D ONVOY, LLC - MN 628   2016-12-18   
320-408 6 Plato MN   5256 LEVEL 3 COMMUNICATIONS, LLC - MN 628   2023-02-25   
320-408 7 Plato MN   508J CENTURYLINK COMMUNICATIONS, LLC 628   2014-12-19   
320-408 8 Plato MN   184D ONVOY, LLC - MN 628   2015-06-20   
320-408 9 Plato MN   184D ONVOY, LLC - MN 628   2023-09-03   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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