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: BRFDCOMADS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
303-265 4 Denver CO 9636 QWEST CORPORATION 656      
303-272 A Denver CO 9636 QWEST CORPORATION 656      
303-404 A Denver CO 9636 QWEST CORPORATION 656      
303-410 A Denver CO 9636 QWEST CORPORATION 656      
303-438 A Denver CO 9636 QWEST CORPORATION 656      
303-439 A Denver CO 9636 QWEST CORPORATION 656      
303-453 5 Denver CO 9636 QWEST CORPORATION 656      
303-453 6 Denver CO 9636 QWEST CORPORATION 656      
303-460 A Denver CO 9636 QWEST CORPORATION 656      
303-464 A Denver CO 9636 QWEST CORPORATION 656      
303-465 A Denver CO 9636 QWEST CORPORATION 656      
303-466 A Denver CO 9636 QWEST CORPORATION 656      
303-469 A Denver CO 9636 QWEST CORPORATION 656      
303-533 A Denver CO 9636 QWEST CORPORATION 656      
303-635 A Denver CO 9636 QWEST CORPORATION 656      
303-635 0 Denver CO 9636 QWEST CORPORATION 656      
303-635 1 Denver CO 9636 QWEST CORPORATION 656      
303-635 2 Denver CO 9636 QWEST CORPORATION 656      
303-635 3 Denver CO 9636 QWEST CORPORATION 656      
303-635 4 Denver CO 9636 QWEST CORPORATION 656      
303-635 5 Denver CO 9636 QWEST CORPORATION 656      
303-635 7 Denver CO 9636 QWEST CORPORATION 656      
303-635 8 Denver CO 9636 QWEST CORPORATION 656      
303-635 9 Denver CO 9636 QWEST CORPORATION 656      
720-558 A Denver CO 9636 QWEST CORPORATION 656      
720-566 A Denver CO 9636 QWEST CORPORATION 656      
720-887 A Denver CO 9636 QWEST CORPORATION 656      
983-888 2 Denver CO 9636 QWEST CORPORATION 656      
983-888 3 Denver CO 9636 QWEST CORPORATION 656      
983-888 4 Denver CO 9636 QWEST CORPORATION 656      
983-888 5 Denver CO 9636 QWEST CORPORATION 656      
983-888 6 Denver CO 9636 QWEST CORPORATION 656      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

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