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.

Switch: DNVRCOWSDS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
303-727 A Denver CO 9636 QWEST CORPORATION 656      
303-727 1 Denver CO 9636 QWEST CORPORATION 656      
303-727 5 Denver CO 9636 QWEST CORPORATION 656      
303-727 6 Denver CO 9636 QWEST CORPORATION 656      
303-727 7 Denver CO 9636 QWEST CORPORATION 656      
303-727 8 Denver CO 9636 QWEST CORPORATION 656      
303-727 9 Denver CO 9636 QWEST CORPORATION 656      
303-742 A Denver CO 9636 QWEST CORPORATION 656      
303-922 A Denver CO 9636 QWEST CORPORATION 656      
303-934 A Denver CO 9636 QWEST CORPORATION 656      
303-935 A Denver CO 9636 QWEST CORPORATION 656      
303-936 A Denver CO 9636 QWEST CORPORATION 656      
303-937 A Denver CO 9636 QWEST CORPORATION 656      
303-975 A Denver CO 9636 QWEST CORPORATION 656      
303-975 0 Denver CO 9636 QWEST CORPORATION 656      
303-975 1 Denver CO 9636 QWEST CORPORATION 656      
303-975 2 Denver CO 9636 QWEST CORPORATION 656      
303-975 3 Denver CO 9636 QWEST CORPORATION 656      
303-975 4 Denver CO 9636 QWEST CORPORATION 656      
303-975 5 Denver CO 9636 QWEST CORPORATION 656      
303-975 7 Denver CO 9636 QWEST CORPORATION 656      
303-975 8 Denver CO 9636 QWEST CORPORATION 656      
303-975 9 Denver CO 9636 QWEST CORPORATION 656      
720-884 A Denver CO 9636 QWEST CORPORATION 656      
720-884 0 Denver CO 9636 QWEST CORPORATION 656      
720-884 1 Denver CO 9636 QWEST CORPORATION 656      
720-884 2 Denver CO 9636 QWEST CORPORATION 656      
720-884 3 Denver CO 9636 QWEST CORPORATION 656      
720-884 4 Denver CO 9636 QWEST CORPORATION 656      
720-884 5 Denver CO 9636 QWEST CORPORATION 656      
720-884 8 Denver CO 9636 QWEST CORPORATION 656      

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

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