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: 921

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
720-921 A Denver CO DNVTCO56DS8  6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656      
720-921 0 Denver CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2022-08-08   
720-921 1 Denver CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2022-08-08   
720-921 2 Denver CO DNVTCO56DS8  6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656      
720-921 3 Denver CO DNVTCO56DS8  6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656      
720-921 4 Denver CO DNVRCOII3MD  6529 T-MOBILE USA, INC. 656   2008-02-04   
720-921 5 Denver CO DNVRCOII3MD  6529 T-MOBILE USA, INC. 656   2008-02-04   
720-921 6 Denver CO DNVRCOII3MD  6529 T-MOBILE USA, INC. 656   2008-02-04   
720-921 7 Denver CO DNVTCO56DS8  6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656      
720-921 8 Denver CO ENWDCO47DS3  8980 XO COLORADO, LLC 656   2008-04-13   
720-921 9 Denver CO DNVRCOII3MD  6529 T-MOBILE USA, INC. 656   2021-12-10   

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

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