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: 238

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
720-238 A Denver CO DNVRCOII3MD  6529 T-MOBILE USA, INC. 656      
720-238 0 Denver CO DNVRCOII3MD  6529 T-MOBILE USA, INC. 656      
720-238 1 Denver CO DNVRCOII3MD  6529 T-MOBILE USA, INC. 656      
720-238 2 Denver CO DNVRCOII3MD  6529 T-MOBILE USA, INC. 656   2005-10-01   
720-238 3 Denver CO DNVRCOII3MD  6529 T-MOBILE USA, INC. 656   2005-10-01   
720-238 4 Denver CO DNVRCOII3MD  6529 T-MOBILE USA, INC. 656      
720-238 5 Denver CO DNVRCOII3MD  6529 T-MOBILE USA, INC. 656   2005-10-01   
720-238 6 Denver CO DNVRCOII3MD  6529 T-MOBILE USA, INC. 656      
720-238 7 Denver CO DNVRCOMD4MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656   2007-01-11   
720-238 8 Denver CO DNVRCOII3MD  6529 T-MOBILE USA, INC. 656      
720-238 9 Denver CO DNVRCOII3MD  6529 T-MOBILE USA, INC. 656      

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

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.