Local Calling Guide

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Mountain Lake, MN

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
507-427 A MTLKMNXMDS1  1123 CITIZENS TELECOM CO MN-FRONTIER CITIZENS COM-MN 620      
507-427 0   1123 CITIZENS TELECOM CO MN-FRONTIER CITIZENS COM-MN 620      
507-427 1   1123 CITIZENS TELECOM CO MN-FRONTIER CITIZENS COM-MN 620      
507-427 2   1123 CITIZENS TELECOM CO MN-FRONTIER CITIZENS COM-MN 620      
507-427 3   1123 CITIZENS TELECOM CO MN-FRONTIER CITIZENS COM-MN 620      
507-427 4   1123 CITIZENS TELECOM CO MN-FRONTIER CITIZENS COM-MN 620      
507-427 5   1123 CITIZENS TELECOM CO MN-FRONTIER CITIZENS COM-MN 620      
507-427 6   184D ONVOY, LLC - MN 620   2021-03-08   
507-427 8   1123 CITIZENS TELECOM CO MN-FRONTIER CITIZENS COM-MN 620      
507-427 9   1123 CITIZENS TELECOM CO MN-FRONTIER CITIZENS COM-MN 620      
507-636 A OWTNMNOWTMD  719F MCC TELEPHONY OF MINNESOTA, LLC - MN 620      
507-636 0   719F MCC TELEPHONY OF MINNESOTA, LLC - MN 620   2010-05-14   
507-636 1   073H TELNYX LLC 620   2020-07-20   
507-636 3   184D ONVOY, LLC - MN 620   2019-09-12   
507-636 4   145J TERRA NOVA TELECOM INC. 620   2025-09-01   
507-636 5   184D ONVOY, LLC - MN 620   2020-11-07   
507-636 6   508J CENTURYLINK COMMUNICATIONS, LLC 620   2017-05-02   
507-636 7   184D ONVOY, LLC - MN 620   2015-01-05   
507-636 8   624H ONVOY SPECTRUM, LLC 620   2021-10-23   
507-636 9   624H ONVOY SPECTRUM, LLC 620   2021-06-21   

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

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