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: 763

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
970-763 A Vail CO DNVTCO56DS8  6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656      
970-763 0 Vail CO   6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656      
970-763 1 Vail CO   073H TELNYX LLC 656   2017-03-23   
970-763 2 Vail CO   278F PEERLESS NETWORK OF COLORADO, LLC - CO 656   2018-08-31   
970-763 3 Vail CO   318J COMCAST IP PHONE, LLC 656   2019-01-03   
970-763 4 Vail CO   6010 NEW CINGULAR WIRELESS PCS, LLC 656   2018-12-25   
970-763 5 Vail CO   318J COMCAST IP PHONE, LLC 656   2013-05-18   
970-763 6 Vail CO   026D ONVOY, LLC - CO 656   2018-12-31   
970-763 7 Vail CO   026D ONVOY, LLC - CO 656   2006-10-29   
970-763 8 Vail CO   6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2018-11-16   
970-763 9 Vail CO   026D ONVOY, LLC - CO 656   2018-12-31   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.