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.
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Switch: DNVRCOMDDS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
303-354 A Denver CO 7378 TELEPORT COMMUNICATIONS AMERICA, LLC - CO 656      
720-385 3 Denver CO 7378 TELEPORT COMMUNICATIONS AMERICA, LLC - CO 656   2005-06-07   
720-479 A Denver CO 7378 TELEPORT COMMUNICATIONS AMERICA, LLC - CO 656      
720-479 0 Denver CO 7378 TELEPORT COMMUNICATIONS AMERICA, LLC - CO 656      
720-479 1 Denver CO 7378 TELEPORT COMMUNICATIONS AMERICA, LLC - CO 656      
720-479 2 Denver CO 7378 TELEPORT COMMUNICATIONS AMERICA, LLC - CO 656      
720-479 3 Denver CO 7378 TELEPORT COMMUNICATIONS AMERICA, LLC - CO 656      
720-479 4 Denver CO 7378 TELEPORT COMMUNICATIONS AMERICA, LLC - CO 656      
720-479 5 Denver CO 7378 TELEPORT COMMUNICATIONS AMERICA, LLC - CO 656      
720-479 6 Denver CO 7378 TELEPORT COMMUNICATIONS AMERICA, LLC - CO 656      
720-479 7 Denver CO 7378 TELEPORT COMMUNICATIONS AMERICA, LLC - CO 656      
720-479 9 Denver CO 7378 TELEPORT COMMUNICATIONS AMERICA, LLC - CO 656      
720-758 1 Denver CO 7378 TELEPORT COMMUNICATIONS AMERICA, LLC - CO 656   2017-03-03   
720-758 2 Denver CO 7378 TELEPORT COMMUNICATIONS AMERICA, LLC - CO 656   2017-03-03   
720-758 3 Denver CO 7378 TELEPORT COMMUNICATIONS AMERICA, LLC - CO 656   2017-03-03   
720-758 4 Denver CO 7378 TELEPORT COMMUNICATIONS AMERICA, LLC - CO 656   2017-03-03   
720-758 5 Denver CO 7378 TELEPORT COMMUNICATIONS AMERICA, LLC - CO 656   2017-03-03   
720-925 6 Denver CO 7378 TELEPORT COMMUNICATIONS AMERICA, LLC - CO 656   2016-02-14   
720-925 7 Denver CO 7378 TELEPORT COMMUNICATIONS AMERICA, LLC - CO 656   2016-02-14   
970-372 3 Fort Collins CO 7378 TELEPORT COMMUNICATIONS AMERICA, LLC - CO 656   2003-12-17   
970-898 A Fort Collins CO 7378 TELEPORT COMMUNICATIONS AMERICA, LLC - CO 656      

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

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