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: 300

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
320-300 A Glencoe MN MPLSMNCD9MD  5256 LEVEL 3 COMMUNICATIONS, LLC - MN 628      
320-300 0 Glencoe MN   980E BANDWIDTH.COM CLEC, LLC - MN 628   2008-11-30   
320-300 1 Glencoe MN   184D ONVOY, LLC - MN 628   2008-07-27   
320-300 2 Glencoe MN   184D ONVOY, LLC - MN 628   2021-11-01   
320-300 3 Glencoe MN   073H TELNYX LLC 628   2020-07-19   
320-300 4 Glencoe MN   5256 LEVEL 3 COMMUNICATIONS, LLC - MN 628   2004-09-04   
320-300 5 Glencoe MN   184D ONVOY, LLC - MN 628   2019-01-31   
320-300 6 Glencoe MN   8405 TELEPORT COMMUNICATIONS AMERICA, LLC - MN 628   2012-03-29   
320-300 7 Glencoe MN   508J CENTURYLINK COMMUNICATIONS, LLC 628   2014-08-08   
320-300 8 Glencoe MN   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 628   2010-12-16   
320-300 9 Glencoe MN   184D ONVOY, LLC - MN 628   2019-01-31   

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

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