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.

NPA: 970 [Rate centres in NPA 970] [Dial plan for NPA 970]

NXX: 335

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
970-335 A Durango CO DURNCOMADS0  9636 QWEST CORPORATION 656      
970-335 0 Durango CO DURNCOMADS0  9636 QWEST CORPORATION 656      
970-335 1 Durango CO DURNCOMADS0  9636 QWEST CORPORATION 656      
970-335 2 Durango CO DURNCOMADS0  9636 QWEST CORPORATION 656      
970-335 3 Durango CO DURNCOMADS0  9636 QWEST CORPORATION 656      
970-335 4 Durango CO DURNCOMADS0  9636 QWEST CORPORATION 656      
970-335 5 Durango CO DURNCOMADS0  9636 QWEST CORPORATION 656      
970-335 6 Durango CO DURNCOMADS0  9636 QWEST CORPORATION 656      
970-335 7 Durango CO DURNCOMADS0  9636 QWEST CORPORATION 656      
970-335 8 Durango CO DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656   2010-02-20   
970-335 9 Durango CO DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656   2010-09-04   

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

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.