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.

Temescal Canyon, CA

<< 1 2 3

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
951-638 2   7718 LEVEL 3 TELECOM OF CALIFORNIA, LP - CA 730   2004-10-26   
951-638 3   981E BANDWIDTH.COM CLEC, LLC - CA 730   2010-09-19   
951-638 4   981E BANDWIDTH.COM CLEC, LLC - CA 730   2010-03-04   
951-638 5   516C AT&T CORP. 730   2006-06-30   
951-638 6   649C ONVOY, LLC - CA 730   2011-04-08   
951-638 7   9262 UTILITY TELECOM GROUP, LLC - CA 730   2006-05-25   
951-638 8   516J TON80 COMMUNICATIONS, LLC 730   2022-04-19   
951-638 9   981E BANDWIDTH.COM CLEC, LLC - CA 730   2011-08-28   
951-646 A LSANCAJW7MD  939H COMMIO, LLC 730      
951-646 0   939H COMMIO, LLC 730   2023-10-14   
951-646 1   939H COMMIO, LLC 730   2023-10-14   
951-646 2   939H COMMIO, LLC 730   2023-10-14   
951-646 3   939H COMMIO, LLC 730   2023-10-14   
951-646 4   939H COMMIO, LLC 730   2023-10-14   
951-646 5   649C ONVOY, LLC - CA 730   2023-10-30   
951-646 6   649C ONVOY, LLC - CA 730   2023-10-30   
951-646 7   649C ONVOY, LLC - CA 730   2023-10-30   
951-646 8   649C ONVOY, LLC - CA 730   2023-10-30   
951-646 9   649C ONVOY, LLC - CA 730   2023-10-30   
951-667 A TRNECAGB7MD  6529 T-MOBILE USA, INC. 730      
951-667 0   6529 T-MOBILE USA, INC. 730   2003-06-10   
951-667 1   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 730   2006-08-10   
951-667 2   7139 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 730   2001-12-07   
951-667 3   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 730   2002-12-24   
951-667 4   671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 730   2003-08-20   
951-667 5   981E BANDWIDTH.COM CLEC, LLC - CA 730   2009-01-13   
951-667 6   145J TERRA NOVA TELECOM INC. 730   2025-06-10   
951-667 7   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 730   2004-04-22   
951-667 8   649C ONVOY, LLC - CA 730   2006-03-12   
951-667 9   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2011-02-06   
951-716 A BLTNCAADGMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2024-01-26   
951-716 0   649C ONVOY, LLC - CA 730   2025-02-01   
951-716 1   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2024-06-03   
951-716 2   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2025-04-06   
951-716 3   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2025-07-14   
951-716 5   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2025-10-07   
951-716 6   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2025-10-07   
951-716 7   373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 730   2024-11-19   
951-716 9   373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 730   2024-03-21   
951-855 A LSANCAJWIMD  965H FRACTEL, LLC 730      
951-855 0   6529 T-MOBILE USA, INC. 730   2020-02-18   
951-855 1   6529 T-MOBILE USA, INC. 730   2020-02-18   
951-855 2   6529 T-MOBILE USA, INC. 730   2020-01-21   
951-855 3   6529 T-MOBILE USA, INC. 730   2019-12-17   
951-855 4   6529 T-MOBILE USA, INC. 730   2019-12-17   
951-855 5   965H FRACTEL, LLC 730   2019-07-10   
951-855 6   6529 T-MOBILE USA, INC. 730   2019-11-18   
951-855 7   6529 T-MOBILE USA, INC. 730   2019-10-15   
951-855 8   649C ONVOY, LLC - CA 730   2019-09-09   
951-855 9   6529 T-MOBILE USA, INC. 730   2019-09-14   

<< 1 2 3

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

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.