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.

Glenwood Springs, CO

<< 1 2 3 >>

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
970-404 2 DNVRCOII0MD  6529 T-MOBILE USA, INC. 656      
970-404 3 DNVRCO37DS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 656   2008-01-25   
970-404 4 DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2017-06-22   
970-404 5 AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2013-04-15   
970-404 6 AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2019-11-14   
970-404 7 DNVRCOII0MD  6529 T-MOBILE USA, INC. 656      
970-404 8 DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2013-04-04   
970-404 9 AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2022-05-04   
970-456 A DNVTCO56DS8  6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656      
970-456 0 DNVTCOZICMD  515J IP HORIZON LLC 656   2024-07-12   
970-456 1 DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656   2010-02-20   
970-456 2 AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2008-01-21   
970-456 3 AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2008-01-31   
970-456 4 DNVTCO56DS8  6118 LEVEL 3 COMMUNICATIONS, LLC - CO 656      
970-456 5 AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2008-05-08   
970-456 6 AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2008-05-29   
970-456 7 DNVRCOMD4MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656   2008-06-01   
970-456 8 AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2008-09-07   
970-456 9 AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2009-10-30   
970-505 A DNVRCOII0MD  6529 T-MOBILE USA, INC. 656      
970-505 0 AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2023-02-20   
970-505 1 DNVRCOSOFMD  624H ONVOY SPECTRUM, LLC 656   2025-01-03   
970-505 2 DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2023-10-14   
970-505 3 DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2023-10-14   
970-505 4 DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2023-10-14   
970-505 5 DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2023-10-14   
970-505 6 DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2023-10-14   
970-505 7 AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2023-11-06   
970-505 8 DNVRCOII0MD  6529 T-MOBILE USA, INC. 656   2023-01-13   
970-505 9 DNVRCOII0MD  6529 T-MOBILE USA, INC. 656   2023-01-13   
970-618 A AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656      
970-654 A   6010 NEW CINGULAR WIRELESS PCS, LLC 656   2025-05-29   
970-654 0   6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2025-09-08   
970-654 2   6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2025-12-15   
970-654 6   6010 NEW CINGULAR WIRELESS PCS, LLC 656   2025-05-29   
970-654 7   6010 NEW CINGULAR WIRELESS PCS, LLC 656   2025-05-29   
970-654 8   6010 NEW CINGULAR WIRELESS PCS, LLC 656   2025-05-29   
970-654 9   6010 NEW CINGULAR WIRELESS PCS, LLC 656   2025-05-29   
970-928 A GLSPCOMADS0  9636 QWEST CORPORATION 656      
970-930 A DNVRCOII0MD  6529 T-MOBILE USA, INC. 656      
970-930 0 DNVRCOII0MD  6529 T-MOBILE USA, INC. 656      
970-930 1 DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656   2008-11-20   
970-930 2 DNVRCOII0MD  6529 T-MOBILE USA, INC. 656   2007-01-02   
970-930 3 DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2016-03-11   
970-930 4 DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2016-03-11   
970-930 5 DNVRCOMD4MD  6010 NEW CINGULAR WIRELESS PCS, LLC 656   2006-06-17   
970-930 6 DNVRCOMA39Z  318J COMCAST IP PHONE, LLC 656   2014-09-19   
970-930 7 AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2016-02-27   
970-930 8 DNVRCO26DS5  278F PEERLESS NETWORK OF COLORADO, LLC - CO 656   2013-04-26   
970-945 A GLSPCOMADS0  9636 QWEST CORPORATION 656      

<< 1 2 3 >>

Last updated: Sun, 17 May 2026 03:26:51 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.