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.

Alamosa, CO

<< 1 2

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
719-670 0   6010 NEW CINGULAR WIRELESS PCS, LLC 658   2024-12-07   
719-670 1   026D ONVOY, LLC - CO 658   2024-12-14   
719-670 2   5562 METROPCS, INC. 658   2022-10-04   
719-670 3   026D ONVOY, LLC - CO 658   2025-03-02   
719-670 4   026D ONVOY, LLC - CO 658   2025-05-04   
719-670 5   6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 658   2025-11-12   
719-670 7   6010 NEW CINGULAR WIRELESS PCS, LLC 658   2024-11-17   
719-670 8   073H TELNYX LLC 658   2022-10-04   
719-670 9   939H COMMIO, LLC 658   2022-11-05   
719-936 A CLSPCOMAXCZ  6874 N.E. COLORADO CELLULAR, INC. 658      
719-936 0   5562 METROPCS, INC. 658   2022-01-21   
719-936 1   6874 N.E. COLORADO CELLULAR, INC. 658   2020-10-10   
719-936 2   278F PEERLESS NETWORK OF COLORADO, LLC - CO 658   2021-09-30   
719-936 4   6010 NEW CINGULAR WIRELESS PCS, LLC 658   2021-05-07   
719-936 5   6010 NEW CINGULAR WIRELESS PCS, LLC 658   2021-05-07   
719-936 6   026D ONVOY, LLC - CO 658   2020-10-26   
719-936 7   026D ONVOY, LLC - CO 658   2020-10-26   
719-936 8   5562 METROPCS, INC. 658   2022-01-26   
719-936 9   515J IP HORIZON LLC 658   2022-04-22   
719-937 A CLSPCOMAXMX  6118 LEVEL 3 COMMUNICATIONS, LLC - CO 658      
719-937 0   516J TON80 COMMUNICATIONS, LLC 658   2021-10-05   
719-937 1   6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 658   2009-01-05   
719-937 2   792K CHARTER IP ENABLED SERVICES, LLC 658   2005-12-15   
719-937 3   6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 658   2009-10-20   
719-937 4   6118 LEVEL 3 COMMUNICATIONS, LLC - CO 658      
719-937 5   145J TERRA NOVA TELECOM INC. 658   2024-12-04   
719-937 7   026D ONVOY, LLC - CO 658   2011-02-06   
719-937 8   6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 658   2011-04-04   
719-937 9   6874 N.E. COLORADO CELLULAR, INC. 658   2014-11-13   
719-992 A CLSPCOMAXMX  6118 LEVEL 3 COMMUNICATIONS, LLC - CO 658      
719-992 0   6118 LEVEL 3 COMMUNICATIONS, LLC - CO 658      
719-992 1   6010 NEW CINGULAR WIRELESS PCS, LLC 658   2010-11-04   
719-992 2   145J TERRA NOVA TELECOM INC. 658   2024-02-14   
719-992 3   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 658   2010-11-01   
719-992 4   6874 N.E. COLORADO CELLULAR, INC. 658   2014-11-13   
719-992 5   073H TELNYX LLC 658   2017-03-23   
719-992 7   078F BANDWIDTH.COM CLEC, LLC - CO 658   2020-04-05   
719-992 8   6010 NEW CINGULAR WIRELESS PCS, LLC 658   2011-06-20   
719-992 9   5562 METROPCS, INC. 658   2022-09-16   

<< 1 2

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

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.