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: 636

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
970-636 A Yampa CO DNVRCO26DS5  278F PEERLESS NETWORK OF COLORADO, LLC - CO 656      
970-636 0 Yampa CO DNVRCO26DS5  278F PEERLESS NETWORK OF COLORADO, LLC - CO 656      
970-636 1 Yampa CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
970-636 2 Yampa CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
970-636 3 Yampa CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
970-636 4 Yampa CO   515J IP HORIZON LLC 656      
970-636 5 Yampa CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
970-636 6 Yampa CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656      
970-636 7 Yampa CO HLRNCOFP1MD  508J CENTURYLINK COMMUNICATIONS, LLC 656      
970-636 8 Yampa CO DNVRCO26XIX  073H TELNYX LLC 656      
970-636 9 Yampa CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.