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: 300

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
970-300 A Aspen CO DNVTCO56DS8  6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656      
970-300 0 Aspen CO DNVTCO56DS8  6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656   2012-11-16   
970-300 1 Aspen CO DNVTCO56DS8  6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656   2005-02-01   
970-300 2 Aspen CO DNVTCO56DS8  6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656   2005-07-30   
970-300 3 Aspen CO DNVRCO37DS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 656   2011-11-01   
970-300 4 Aspen CO DNVTCO56DS8  6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656      
970-300 5 Aspen CO DNVTCO56DS8  6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656   2011-07-21   
970-300 6 Aspen CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2012-10-27   
970-300 7 Aspen CO ASPECOMADS0  9636 QWEST CORPORATION 656   2004-05-17   
970-300 8 Aspen CO DNVRCOMD4MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656   2016-01-04   
970-300 9 Aspen CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2016-04-23   

Last updated: Fri, 22 Mar 2024 03:02:44 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.