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: 531

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
720-531 A Denver CO DNVRCOMA39Z  318J COMCAST IP PHONE, LLC 656      
720-531 0 Denver CO HLRNCOFP1MD  508J CENTURYLINK COMMUNICATIONS, LLC 656   2016-10-03   
720-531 1 Denver CO HLRNCOFP1MD  508J CENTURYLINK COMMUNICATIONS, LLC 656   2016-10-09   
720-531 2 Denver CO DNVRCOMA39Z  318J COMCAST IP PHONE, LLC 656   2016-09-30   
720-531 3 Denver CO DNVRCOMA39Z  318J COMCAST IP PHONE, LLC 656   2016-09-30   
720-531 4 Denver CO DNVRCOMA39Z  318J COMCAST IP PHONE, LLC 656   2016-09-30   
720-531 5 Denver CO DNVRCOMA39Z  318J COMCAST IP PHONE, LLC 656   2016-09-30   
720-531 6 Denver CO HLRNCOFP1MD  508J CENTURYLINK COMMUNICATIONS, LLC 656   2016-10-09   
720-531 7 Denver CO HLRNCOFP1MD  508J CENTURYLINK COMMUNICATIONS, LLC 656   2016-10-09   
720-531 8 Denver CO HLRNCOFP1MD  508J CENTURYLINK COMMUNICATIONS, LLC 656   2016-10-09   
720-531 9 Denver CO HLRNCOFP1MD  508J CENTURYLINK COMMUNICATIONS, LLC 656   2016-10-09   

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

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