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: LSLLCOMARS1

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
970-284 A La Salle CO 9636 QWEST CORPORATION 656      
970-284 0 La Salle CO 9636 QWEST CORPORATION 656      
970-284 1 La Salle CO 9636 QWEST CORPORATION 656      
970-284 5 La Salle CO 9636 QWEST CORPORATION 656      
970-284 6 La Salle CO 9636 QWEST CORPORATION 656      
970-284 7 La Salle CO 9636 QWEST CORPORATION 656      
970-284 9 La Salle CO 9636 QWEST CORPORATION 656      

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

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.