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.

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
303-397 A Denver CO 9636 QWEST CORPORATION 656      
303-643 A Denver CO 9636 QWEST CORPORATION 656      
303-643 0 Denver CO 9636 QWEST CORPORATION 656      
303-643 1 Denver CO 9636 QWEST CORPORATION 656      
303-643 2 Denver CO 9636 QWEST CORPORATION 656      
303-643 3 Denver CO 9636 QWEST CORPORATION 656      
303-643 4 Denver CO 9636 QWEST CORPORATION 656      
303-643 6 Denver CO 9636 QWEST CORPORATION 656      
303-643 7 Denver CO 9636 QWEST CORPORATION 656      
303-643 8 Denver CO 9636 QWEST CORPORATION 656      
303-643 9 Denver CO 9636 QWEST CORPORATION 656      
303-645 A Denver CO 9636 QWEST CORPORATION 656      
303-645 0 Denver CO 9636 QWEST CORPORATION 656      
303-645 1 Denver CO 9636 QWEST CORPORATION 656      
303-645 2 Denver CO 9636 QWEST CORPORATION 656      
303-645 5 Denver CO 9636 QWEST CORPORATION 656      
303-645 6 Denver CO 9636 QWEST CORPORATION 656      
303-645 7 Denver CO 9636 QWEST CORPORATION 656      
303-645 8 Denver CO 9636 QWEST CORPORATION 656      
303-645 9 Denver CO 9636 QWEST CORPORATION 656      
303-649 A Denver CO 9636 QWEST CORPORATION 656      
303-658 6 Denver CO 9636 QWEST CORPORATION 656      
303-658 7 Denver CO 9636 QWEST CORPORATION 656      
303-658 8 Denver CO 9636 QWEST CORPORATION 656      
303-662 A Denver CO 9636 QWEST CORPORATION 656      
303-705 A Denver CO 9636 QWEST CORPORATION 656      
303-706 A Denver CO 9636 QWEST CORPORATION 656      
303-708 A Denver CO 9636 QWEST CORPORATION 656      
303-727 2 Denver CO 9636 QWEST CORPORATION 656      
303-754 A Denver CO 9636 QWEST CORPORATION 656      
303-768 A Denver CO 9636 QWEST CORPORATION 656      
303-784 A Denver CO 9636 QWEST CORPORATION 656      
303-790 A Denver CO 9636 QWEST CORPORATION 656      
303-792 A Denver CO 9636 QWEST CORPORATION 656      
303-799 A Denver CO 9636 QWEST CORPORATION 656      
303-858 A Denver CO 9636 QWEST CORPORATION 656      
303-925 A Denver CO 9636 QWEST CORPORATION 656      
720-250 1 Denver CO 9636 QWEST CORPORATION 656   2004-06-07   
720-250 2 Denver CO 9636 QWEST CORPORATION 656   2004-06-07   
720-250 3 Denver CO 9636 QWEST CORPORATION 656   2004-06-07   
720-250 4 Denver CO 9636 QWEST CORPORATION 656   2004-06-07   
720-250 5 Denver CO 9636 QWEST CORPORATION 656   2004-06-07   
720-267 A Denver CO 9636 QWEST CORPORATION 656      
720-268 A Denver CO 9636 QWEST CORPORATION 656      
720-345 6 Denver CO 9636 QWEST CORPORATION 656   2008-06-30   
720-568 A Denver CO 9636 QWEST CORPORATION 656      
720-568 1 Denver CO 9636 QWEST CORPORATION 656      
720-568 2 Denver CO 9636 QWEST CORPORATION 656      
720-568 3 Denver CO 9636 QWEST CORPORATION 656      
720-568 4 Denver CO 9636 QWEST CORPORATION 656      

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

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