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: DNVRCOCPDS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
303-244 A Denver CO 9636 QWEST CORPORATION 656      
303-291 A Denver CO 9636 QWEST CORPORATION 656      
303-292 A Denver CO 9636 QWEST CORPORATION 656      
303-293 A Denver CO 9636 QWEST CORPORATION 656      
303-294 A Denver CO 9636 QWEST CORPORATION 656      
303-295 A Denver CO 9636 QWEST CORPORATION 656      
303-296 A Denver CO 9636 QWEST CORPORATION 656      
303-297 A Denver CO 9636 QWEST CORPORATION 656      
303-298 A Denver CO 9636 QWEST CORPORATION 656      
303-299 A Denver CO 9636 QWEST CORPORATION 656      
303-308 A Denver CO 9636 QWEST CORPORATION 656      
303-312 A Denver CO 9636 QWEST CORPORATION 656      
303-313 A Denver CO 9636 QWEST CORPORATION 656      
303-380 A Denver CO 9636 QWEST CORPORATION 656      
303-382 A Denver CO 9636 QWEST CORPORATION 656      
303-383 A Denver CO 9636 QWEST CORPORATION 656      
303-391 A Denver CO 9636 QWEST CORPORATION 656      
303-672 A Denver CO 9636 QWEST CORPORATION 656      
303-675 A Denver CO 9636 QWEST CORPORATION 656      
303-896 A Denver CO 9636 QWEST CORPORATION 656      
303-965 A Denver CO 9636 QWEST CORPORATION 656      
303-992 A Denver CO 9636 QWEST CORPORATION 656      
720-264 A Denver CO 9636 QWEST CORPORATION 656      
720-578 A Denver CO 9636 QWEST CORPORATION 656      

Last updated: Wed, 01 Apr 2020 02:09:16 UTC

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