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.

Kremmling, CO

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
970-410 A DNVRCO26DS5  278F PEERLESS NETWORK OF COLORADO, LLC - CO 656      
970-410 0 DNVRCO26DS5  278F PEERLESS NETWORK OF COLORADO, LLC - CO 656   2014-11-16   
970-410 1 DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2015-08-05   
970-410 2 DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2016-04-17   
970-410 3 DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2016-04-17   
970-410 4 DNVRCO37DS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 656   2016-07-04   
970-410 5 DNVRCO26DS5  278F PEERLESS NETWORK OF COLORADO, LLC - CO 656   2018-12-29   
970-410 6 DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2018-12-30   
970-410 7 HLRNCOFP1MD  508J CENTURYLINK COMMUNICATIONS, LLC 656   2014-11-19   
970-410 8 DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2018-12-30   
970-410 9 DNVRCO26XIX  073H TELNYX LLC 656   2018-05-02   
970-537 A STSPCO052MD  013B UNION TELEPHONE COMPANY 656      
970-724 A KRNGCOMARS1  9636 QWEST CORPORATION 656      
970-724 0 KRNGCOMARS1  9636 QWEST CORPORATION 656      
970-724 1 KRNGCOMARS1  9636 QWEST CORPORATION 656      
970-724 2 DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2012-12-17   
970-724 3 KRNGCOMARS1  9636 QWEST CORPORATION 656      
970-724 4 DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656   2012-04-15   
970-724 5 DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2006-02-05   
970-724 6 DNVRCOMA39Z  318J COMCAST IP PHONE, LLC 656   2020-07-14   
970-724 7 DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2007-03-18   
970-724 8 KRNGCOMARS1  9636 QWEST CORPORATION 656      
970-724 9 KRNGCOMARS1  9636 QWEST CORPORATION 656      
970-997 A DNVRCO26XUX  516J TON80 COMMUNICATIONS, LLC 656      
970-997 0 DNVRCO26XUX  516J TON80 COMMUNICATIONS, LLC 656   2022-04-25   
970-997 1 DNVTCOZI6MD  073H TELNYX LLC 656   2023-01-29   
970-997 2 DNVTCOZICMD  515J IP HORIZON LLC 656   2024-07-12   
970-997 3 DNVRCOSOFMD  624H ONVOY SPECTRUM, LLC 656   2025-01-03   
970-997 5 DNVRCO26DS5  278F PEERLESS NETWORK OF COLORADO, LLC - CO 656   2023-10-22   
970-997 6 FTCLCOMAAMD  7378 TELEPORT COMMUNICATIONS AMERICA, LLC - CO 656   2023-08-07   
970-997 8 DNVTCO56DS8  6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656   2023-01-06   

Last updated: Sat, 05 Apr 2025 03:03:23 UTC

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.