Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

NPA: 720 [Rate centres in NPA 720] [Dial plan for NPA 720]

NXX: 726

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
720-726 A Denver CO DNVRCOMA39Z  318J COMCAST IP PHONE, LLC 656      
720-726 0 Denver CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2013-12-16   
720-726 1 Denver CO DNVTCO56DS8  6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656   2013-12-16   
720-726 2 Denver CO DNVRCOMA39Z  318J COMCAST IP PHONE, LLC 656   2013-12-13   
720-726 3 Denver CO DNVRCOMA39Z  318J COMCAST IP PHONE, LLC 656   2013-12-13   
720-726 4 Denver CO DNVRCOMA39Z  318J COMCAST IP PHONE, LLC 656   2013-12-13   
720-726 5 Denver CO DNVRCOMA39Z  318J COMCAST IP PHONE, LLC 656   2013-12-13   
720-726 6 Denver CO DNVRCOMA39Z  318J COMCAST IP PHONE, LLC 656   2013-12-13   
720-726 7 Denver CO DNVRCOMA39Z  318J COMCAST IP PHONE, LLC 656   2013-12-13   
720-726 8 Denver CO DNVTCOUZ0MD  829J PAETEC ITEL, LLC 656   2014-01-11   
720-726 9 Denver CO DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656   2014-02-08   

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

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.