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: 437

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
720-437 A Denver CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656      
720-437 0 Denver CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2011-03-25   
720-437 1 Denver CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2011-04-09   
720-437 2 Denver CO DNVRCO37DS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 656   2011-03-28   
720-437 3 Denver CO DNVRCO2669Z  490J DISH WIRELESS, LLC 656   2024-09-16   
720-437 4 Denver CO DNVRCO2669Z  490J DISH WIRELESS, LLC 656   2024-10-30   
720-437 5 Denver CO DNVRCOETPS0  3467 ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 656   2011-03-28   
720-437 6 Denver CO DNVTCOUZ0MD  829J PAETEC ITEL, LLC 656   2011-04-16   
720-437 7 Denver CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2024-12-14   
720-437 8 Denver CO DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656   2011-04-29   
720-437 9 Denver CO DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656   2011-04-29   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

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