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: 323

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
970-323 A Olathe CO OLTHCOMARS1  9636 QWEST CORPORATION 656      
970-323 0 Olathe CO   9636 QWEST CORPORATION 656      
970-323 1 Olathe CO   9636 QWEST CORPORATION 656      
970-323 2 Olathe CO   026D ONVOY, LLC - CO 656   2006-11-05   
970-323 3 Olathe CO   6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656   2004-11-11   
970-323 4 Olathe CO   6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656   2006-05-19   
970-323 5 Olathe CO   9636 QWEST CORPORATION 656      
970-323 6 Olathe CO   9636 QWEST CORPORATION 656      
970-323 7 Olathe CO   278F PEERLESS NETWORK OF COLORADO, LLC - CO 656   2013-04-27   
970-323 8 Olathe CO   9636 QWEST CORPORATION 656      
970-323 9 Olathe CO   9636 QWEST CORPORATION 656      

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

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.