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: 428

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
720-428 A Denver CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
720-428 0 Denver CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2012-07-13   
720-428 1 Denver CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2012-07-13   
720-428 2 Denver CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2012-02-02   
720-428 3 Denver CO ENWDCO47DS3  8980 XO COLORADO, LLC 656   2012-06-07   
720-428 4 Denver CO ENWDCO47DS3  8980 XO COLORADO, LLC 656   2012-06-07   
720-428 5 Denver CO DNVRCO37DS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 656   2012-06-07   
720-428 6 Denver CO ENWDCO47DS3  8980 XO COLORADO, LLC 656   2012-06-07   
720-428 7 Denver CO DNVRCO37DS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 656   2012-06-07   
720-428 8 Denver CO DNVRCOMA39Z  318J COMCAST IP PHONE, LLC 656   2012-06-28   
720-428 9 Denver CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2012-07-13   

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

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