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: HYDNCOMARS1

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
970-276 A Hayden CO 9636 QWEST CORPORATION 656      
970-276 1 Hayden CO 9636 QWEST CORPORATION 656      
970-276 2 Hayden CO 9636 QWEST CORPORATION 656      
970-276 3 Hayden CO 9636 QWEST CORPORATION 656      
970-276 4 Hayden CO 9636 QWEST CORPORATION 656      
970-276 5 Hayden CO 9636 QWEST CORPORATION 656      
970-276 7 Hayden CO 9636 QWEST CORPORATION 656      
970-276 9 Hayden CO 9636 QWEST CORPORATION 656      

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

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