Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 970 [Rate centres in NPA 970] [Dial plan for NPA 970]

NXX: 866

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
970-866 A La Salle CO HLRNCOFP1MD  508J CENTURYLINK COMMUNICATIONS, LLC 656      
970-866 0 La Salle CO   026D ONVOY, LLC - CO 656   2016-03-21   
970-866 1 La Salle CO   026D ONVOY, LLC - CO 656   2016-03-21   
970-866 2 La Salle CO   624H ONVOY SPECTRUM, LLC 656   2025-01-03   
970-866 3 La Salle CO   026D ONVOY, LLC - CO 656   2022-01-06   
970-866 4 La Salle CO   516J TON80 COMMUNICATIONS, LLC 656   2021-09-24   
970-866 5 La Salle CO   515J IP HORIZON LLC 656   2024-07-12   
970-866 6 La Salle CO   026D ONVOY, LLC - CO 656   2019-09-09   
970-866 7 La Salle CO   508J CENTURYLINK COMMUNICATIONS, LLC 656   2015-03-14   
970-866 8 La Salle CO   073H TELNYX LLC 656   2018-05-02   
970-866 9 La Salle CO   026D ONVOY, LLC - CO 656   2022-01-06   

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

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