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: 550

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
720-550 A Denver CO DNVTCOUZAMD  4788 MCLEODUSA TELECOMMUNICATION SERVICES, INC. - CO 656      
720-550 0 Denver CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2013-08-27   
720-550 1 Denver CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2013-08-27   
720-550 2 Denver CO DNVRCOMD4MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656   2013-08-27   
720-550 3 Denver CO DNVRCOMD4MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656   2013-08-27   
720-550 4 Denver CO DNVTCOUZAMD  4788 MCLEODUSA TELECOMMUNICATION SERVICES, INC. - CO 656   2013-08-25   
720-550 5 Denver CO DNVTCOUZAMD  4788 MCLEODUSA TELECOMMUNICATION SERVICES, INC. - CO 656   2013-08-25   
720-550 6 Denver CO DNVRCOMA39Z  318J COMCAST IP PHONE, LLC 656   2013-08-27   
720-550 7 Denver CO DNVRCOMA39Z  318J COMCAST IP PHONE, LLC 656   2013-08-27   
720-550 8 Denver CO DNVRCOMA39Z  318J COMCAST IP PHONE, LLC 656   2013-08-27   
720-550 9 Denver CO DNVRCOMD4MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656   2013-08-27   

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

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