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: 929

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
970-929 A Somerset CO SMRTCOXCRP0  2184 DELTA COUNTY TELE-COMM, INC. 656      
970-929 0 Somerset CO SMRTCOXCRP0  2184 DELTA COUNTY TELE-COMM, INC. 656      
970-929 1 Somerset CO SMRTCOXCRP0  2184 DELTA COUNTY TELE-COMM, INC. 656      
970-929 2 Somerset CO SMRTCOXCRP0  2184 DELTA COUNTY TELE-COMM, INC. 656      
970-929 3 Somerset CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2023-07-22   
970-929 4 Somerset CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2022-10-01   
970-929 5 Somerset CO SMRTCOXCRP0  2184 DELTA COUNTY TELE-COMM, INC. 656      
970-929 8 Somerset CO DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656   2020-09-26   
970-929 9 Somerset CO   145J TERRA NOVA TELECOM INC. 656   2026-01-04   

Last updated: Fri, 10 Jul 2026 02:55:48 UTC

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.