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: 572

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
720-572 A Denver CO AURRCOBUDS0  7378 TELEPORT COMMUNICATIONS AMERICA, LLC - CO 656      
720-572 0 Denver CO DNVRCOII4MD  5562 METROPCS, INC. 656      
720-572 1 Denver CO DNVRCO26XIX  073H TELNYX LLC 656      
720-572 2 Denver CO DNVRCO37DS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 656      
720-572 3 Denver CO DNVRCO37DS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 656      
720-572 4 Denver CO DNVRCOMA39Z  318J COMCAST IP PHONE, LLC 656      
720-572 5 Denver CO DNVRCOMA39Z  318J COMCAST IP PHONE, LLC 656      
720-572 6 Denver CO AURRCOBUDS0  7378 TELEPORT COMMUNICATIONS AMERICA, LLC - CO 656      
720-572 7 Denver CO DNVRCOMA39Z  318J COMCAST IP PHONE, LLC 656      
720-572 8 Denver CO DNVRCO37DS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 656      
720-572 9 Denver CO DNVRCOII4MD  5562 METROPCS, INC. 656      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.