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.

Craig, CO

<< 1 2

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
970-826 2 CRAGCOMADS0  9636 QWEST CORPORATION 656      
970-826 3 CRAGCOMADS0  9636 QWEST CORPORATION 656      
970-826 4 CRAGCOMADS0  9636 QWEST CORPORATION 656      
970-826 5 CRAGCOMADS0  9636 QWEST CORPORATION 656      
970-826 6 CRAGCOMADS0  9636 QWEST CORPORATION 656      
970-826 7 DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2006-11-04   
970-826 8 DURNCOBSDS0  330B FASTTRACK COMMUNICATIONS, INC. - CO 656   2011-12-05   
970-826 9 CRAGCOMADS0  9636 QWEST CORPORATION 656      
970-841 A DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656      
970-841 0 DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656   2021-10-28   
970-841 1 DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656   2022-02-07   
970-841 2 DNVRCOII0MD  6529 T-MOBILE USA, INC. 656   2024-10-03   
970-841 3   026D ONVOY, LLC - CO 656   2026-01-10   
970-841 5 DNVRCOMD4MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656   2023-12-30   
970-841 6 DNVRCO26DS5  278F PEERLESS NETWORK OF COLORADO, LLC - CO 656   2023-09-08   
970-841 7 DNVRCOMD4MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656   2023-01-03   
970-841 8   515J IP HORIZON LLC 656   2022-04-29   
970-841 9 DNVRCOMD4MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656   2022-04-01   

<< 1 2

Last updated: Tue, 31 Mar 2026 13:56:49 UTC

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.