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: CPMTCOMARS3

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
970-455 5 Dillon CO 9636 QWEST CORPORATION 656   2010-01-18   
970-455 6 Dillon CO 9636 QWEST CORPORATION 656   2010-01-18   
970-455 7 Dillon CO 9636 QWEST CORPORATION 656   2010-01-18   
970-968 A Dillon CO 9636 QWEST CORPORATION 656      
970-968 0 Dillon CO 9636 QWEST CORPORATION 656      
970-968 1 Dillon CO 9636 QWEST CORPORATION 656      
970-968 2 Dillon CO 9636 QWEST CORPORATION 656      
970-968 3 Dillon CO 9636 QWEST CORPORATION 656      
970-968 6 Dillon CO 9636 QWEST CORPORATION 656      

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

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