Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 719 [Rate centres in NPA 719] [Dial plan for NPA 719]

NXX: 451

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
719-451 A Del Norte CO CLSPCOMAXUY  073H TELNYX LLC 658      
719-451 0 Del Norte CO   073H TELNYX LLC 658   2019-11-30   
719-451 1 Del Norte CO   278F PEERLESS NETWORK OF COLORADO, LLC - CO 658   2020-01-15   
719-451 2 Del Norte CO   026D ONVOY, LLC - CO 658   2020-12-18   
719-451 3 Del Norte CO   026D ONVOY, LLC - CO 658   2021-03-07   
719-451 4 Del Norte CO   026D ONVOY, LLC - CO 658   2020-10-26   
719-451 5 Del Norte CO   624H ONVOY SPECTRUM, LLC 658   2025-01-03   
719-451 6 Del Norte CO   7378 TELEPORT COMMUNICATIONS AMERICA, LLC - CO 658   2020-11-09   
719-451 7 Del Norte CO   026D ONVOY, LLC - CO 658   2019-10-14   
719-451 8 Del Norte CO   026D ONVOY, LLC - CO 658   2021-03-07   
719-451 9 Del Norte CO   026D ONVOY, LLC - CO 658   2021-10-14   

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

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