Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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Isle, MN

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
320-537 A STCDMNTOX3X  184D ONVOY, LLC - MN 626      
320-537 0   184D ONVOY, LLC - MN 626   2016-05-06   
320-537 1   5256 LEVEL 3 COMMUNICATIONS, LLC - MN 626   2011-05-27   
320-537 2   184D ONVOY, LLC - MN 626   2006-12-17   
320-537 3   184D ONVOY, LLC - MN 626   2019-10-28   
320-537 5   184D ONVOY, LLC - MN 626   2020-01-30   
320-537 6   8405 TELEPORT COMMUNICATIONS AMERICA, LLC - MN 626   2022-06-29   
320-537 7   508J CENTURYLINK COMMUNICATIONS, LLC 626   2017-06-21   
320-537 8   073H TELNYX LLC 626   2020-07-19   
320-676 A ISLEMNXIDS0  1123 CITIZENS TELECOM CO MN-FRONTIER CITIZENS COM-MN 626      

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

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