Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 507 [Rate centres in NPA 507] [Dial plan for NPA 507]

NXX: 992

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
507-992 A Cottonwood MN ROCHMNHH3MD  792K CHARTER IP ENABLED SERVICES, LLC 620   2025-02-27   
507-992 0 Cottonwood MN   792K CHARTER IP ENABLED SERVICES, LLC 620      
507-992 1 Cottonwood MN   184D ONVOY, LLC - MN 620   2017-05-29   
507-992 2 Cottonwood MN   184D ONVOY, LLC - MN 620   2019-09-11   
507-992 4 Cottonwood MN   624H ONVOY SPECTRUM, LLC 620   2021-06-21   
507-992 5 Cottonwood MN   4156 TEKSTAR COMMUNICATIONS, INC. 620   2025-04-13   
507-992 6 Cottonwood MN   8405 TELEPORT COMMUNICATIONS AMERICA, LLC - MN 620   2022-05-23   
507-992 7 Cottonwood MN   184D ONVOY, LLC - MN 620   2014-12-31   
507-992 8 Cottonwood MN   073H TELNYX LLC 620   2020-07-12   
507-992 9 Cottonwood MN   624H ONVOY SPECTRUM, LLC 620   2021-10-24   

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

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