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
303-615 A Denver CO 9636 QWEST CORPORATION 656      
303-620 A Denver CO 9636 QWEST CORPORATION 656      
303-620 0 Denver CO 9636 QWEST CORPORATION 656      
303-620 1 Denver CO 9636 QWEST CORPORATION 656      
303-620 2 Denver CO 9636 QWEST CORPORATION 656      
303-620 3 Denver CO 9636 QWEST CORPORATION 656      
303-620 4 Denver CO 9636 QWEST CORPORATION 656      
303-620 5 Denver CO 9636 QWEST CORPORATION 656      
303-620 7 Denver CO 9636 QWEST CORPORATION 656      
303-620 8 Denver CO 9636 QWEST CORPORATION 656      
303-620 9 Denver CO 9636 QWEST CORPORATION 656      
303-623 A Denver CO 9636 QWEST CORPORATION 656      
303-624 A Denver CO 9636 QWEST CORPORATION 656      
303-626 A Denver CO 9636 QWEST CORPORATION 656      
303-628 A Denver CO 9636 QWEST CORPORATION 656      
303-629 A Denver CO 9636 QWEST CORPORATION 656      
303-630 A Denver CO 9636 QWEST CORPORATION 656      
303-630 3 Denver CO 9636 QWEST CORPORATION 656      
303-630 4 Denver CO 9636 QWEST CORPORATION 656      
303-631 A Denver CO 9636 QWEST CORPORATION 656      
303-633 A Denver CO 9636 QWEST CORPORATION 656      
303-634 A Denver CO 9636 QWEST CORPORATION 656      
303-640 A Denver CO 9636 QWEST CORPORATION 656      
303-685 A Denver CO 9636 QWEST CORPORATION 656      
303-787 A Denver CO 9636 QWEST CORPORATION 656      
303-820 A Denver CO 9636 QWEST CORPORATION 656      
303-825 A Denver CO 9636 QWEST CORPORATION 656      
303-844 A Denver CO 9636 QWEST CORPORATION 656      
303-892 A Denver CO 9636 QWEST CORPORATION 656      
303-893 A Denver CO 9636 QWEST CORPORATION 656      
303-899 A Denver CO 9636 QWEST CORPORATION 656      
303-954 1 Denver CO 9636 QWEST CORPORATION 656   2005-10-28   
303-954 2 Denver CO 9636 QWEST CORPORATION 656   2005-10-28   
303-954 3 Denver CO 9636 QWEST CORPORATION 656   2005-10-28   
303-954 5 Denver CO 9636 QWEST CORPORATION 656   2005-10-28   
303-954 6 Denver CO 9636 QWEST CORPORATION 656   2005-10-28   
303-954 7 Denver CO 9636 QWEST CORPORATION 656   2005-10-28   
720-337 A Denver CO 9636 QWEST CORPORATION 656      
720-359 A Denver CO 9636 QWEST CORPORATION 656      
720-362 A Denver CO 9636 QWEST CORPORATION 656      
720-362 4 Denver CO 9636 QWEST CORPORATION 656   2007-07-21   
720-568 5 Denver CO 9636 QWEST CORPORATION 656      
720-568 6 Denver CO 9636 QWEST CORPORATION 656      
720-622 7 Denver CO 9636 QWEST CORPORATION 656      
720-904 A Denver CO 9636 QWEST CORPORATION 656      
720-931 A Denver CO 9636 QWEST CORPORATION 656      
720-932 A Denver CO 9636 QWEST CORPORATION 656      
720-944 A Denver CO 9636 QWEST CORPORATION 656      
720-945 7 Denver CO 9636 QWEST CORPORATION 656      
720-946 A Denver CO 9636 QWEST CORPORATION 656      

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

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