Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 720 [Rate centres in NPA 720] [Dial plan for NPA 720]

NXX: 817

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
720-817 A Strasburg CO DNVRCOMA39Z  318J COMCAST IP PHONE, LLC 656      
720-817 0 Strasburg CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2023-02-12   
720-817 1 Strasburg CO DNVRCOMA39Z  318J COMCAST IP PHONE, LLC 656   2021-11-15   
720-817 2 Strasburg CO FTCLCOMAAMD  7378 TELEPORT COMMUNICATIONS AMERICA, LLC - CO 656   2024-10-10   
720-817 3 Strasburg CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2022-01-28   
720-817 4 Strasburg CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2022-04-11   
720-817 5 Strasburg CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2023-01-05   
720-817 6 Strasburg CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2023-09-29   
720-817 7 Strasburg CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2022-08-22   
720-817 8 Strasburg CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2022-08-22   
720-817 9 Strasburg CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2023-07-24   

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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