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: 253

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
970-253 A South Sidney CO SDNYNENWDS0  9631 QWEST CORPORATION 646      
970-253 0 South Sidney CO   9631 QWEST CORPORATION 646      
970-253 1 South Sidney CO   9631 QWEST CORPORATION 646      
970-253 2 South Sidney CO   6118 LEVEL 3 COMMUNICATIONS, LLC - CO 646      
970-253 3 South Sidney CO   9631 QWEST CORPORATION 646      
970-253 4 South Sidney CO   9631 QWEST CORPORATION 646      
970-253 5 South Sidney CO   9631 QWEST CORPORATION 646      
970-253 6 South Sidney CO   9631 QWEST CORPORATION 646      
970-253 7 South Sidney CO   9631 QWEST CORPORATION 646      
970-253 8 South Sidney CO   9631 QWEST CORPORATION 646      
970-253 9 South Sidney CO   9631 QWEST CORPORATION 646      

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.