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.

Claremont-San Dimas, CA

<< 1 2 3 4 5 6 7 8 9 >>

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
909-480 6 RVSDCAYAGT1  6529 T-MOBILE USA, INC. 730   2012-09-20   
909-480 7 ONTRCAFXDS0  7718 LEVEL 3 TELECOM OF CALIFORNIA, LP - CA 730   2005-08-19   
909-480 8 LNBHCAXPXQX  981E BANDWIDTH.COM CLEC, LLC - CA 730   2012-10-19   
909-480 9 RVSDCAYAGT1  6529 T-MOBILE USA, INC. 730   2007-09-07   
909-482 A CLMTCAXF62G  2319 FRONTIER CALIFORNIA INC. 730      
909-506 A RVSDCAYAGT1  6529 T-MOBILE USA, INC. 730      
909-506 0 COVNCAXFX3Y  649C ONVOY, LLC - CA 730   2016-10-31   
909-506 1 COVNCAXFX3Y  649C ONVOY, LLC - CA 730   2016-10-31   
909-506 2 COVNCAXFX3Y  649C ONVOY, LLC - CA 730   2016-12-17   
909-506 3 COVNCAXFX3Y  649C ONVOY, LLC - CA 730   2016-12-17   
909-506 4 COVNCAXFXUX  576C TIME WARNER CBL INFO SVCS (CA) DBA TIME WARNER CAB 730   2017-01-27   
909-506 5 RVSDCAYAGT1  6529 T-MOBILE USA, INC. 730   2017-02-05   
909-506 6 RVSDCAYAGT1  6529 T-MOBILE USA, INC. 730   2019-02-15   
909-506 7 RVSDCAYAGT1  6529 T-MOBILE USA, INC. 730   2016-12-09   
909-506 8 RVSDCAYAGT1  6529 T-MOBILE USA, INC. 730   2016-10-30   
909-506 9 RVSDCAYAGT1  6529 T-MOBILE USA, INC. 730   2016-09-15   
909-523 A LSANCA039MD  6630 USA MOBILITY WIRELESS, INC. 730      
909-526 A BLTNCAADGMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2024-03-14   
909-526 0 BLTNCAADGMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2024-03-14   
909-526 1 BLTNCAADGMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2024-03-14   
909-526 2 RVSDCALBCM4  6010 NEW CINGULAR WIRELESS PCS, LLC 730   2024-12-01   
909-526 3 COVNCAXFX2Y  624H ONVOY SPECTRUM, LLC 730   2025-01-22   
909-526 4 LSANCAJWDS9  373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 730   2024-12-03   
909-526 5 BLTNCAADGMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2024-06-27   
909-526 6 BLTNCAADGMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2024-07-29   
909-526 7 BLTNCAADGMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2024-08-26   
909-526 8 BLTNCAADGMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2024-07-11   
909-526 9 RVSDCALBCM4  6010 NEW CINGULAR WIRELESS PCS, LLC 730   2024-04-20   
909-541 A RVSDCAYAGT1  6529 T-MOBILE USA, INC. 730      
909-541 0 RVSDCALBCM4  6010 NEW CINGULAR WIRELESS PCS, LLC 730   2014-10-03   
909-541 1 RVSDCAYAGT1  6529 T-MOBILE USA, INC. 730   2014-10-09   
909-541 2 RVSDCAYAGT1  6529 T-MOBILE USA, INC. 730   2014-10-09   
909-541 3 RVSDCAYAGT1  6529 T-MOBILE USA, INC. 730   2014-10-09   
909-541 4 RVSDCAYAGT1  6529 T-MOBILE USA, INC. 730   2014-10-09   
909-541 5 COVNCAXFXUX  576C TIME WARNER CBL INFO SVCS (CA) DBA TIME WARNER CAB 730   2014-12-17   
909-541 6 RVSDCAYAGT1  6529 T-MOBILE USA, INC. 730   2014-10-07   
909-541 7 RVSDCAYAGT1  6529 T-MOBILE USA, INC. 730   2014-10-07   
909-541 8 RVSDCAYAGT1  6529 T-MOBILE USA, INC. 730   2014-10-02   
909-541 9 RVSDCAYAGT1  6529 T-MOBILE USA, INC. 730   2014-10-02   
909-542 A IRVNCASM1MD  671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 730      
909-542 0   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2025-02-13   
909-542 1 IRVNCASM1MD  671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 730      
909-542 2 IRVNCASM1MD  671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 730      
909-542 3   829J PAETEC ITEL, LLC 730   2006-12-19   
909-542 4 RVSDCAYAGT1  6529 T-MOBILE USA, INC. 730   2007-10-30   
909-542 5 RVSDCAYAGT1  6529 T-MOBILE USA, INC. 730   2007-10-30   
909-542 6 IRVNCASM1MD  671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 730      
909-542 7 RVSDCAYAGT1  6529 T-MOBILE USA, INC. 730   2007-10-30   
909-542 8 LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730   2008-11-23   
909-542 9 COVNCAXFXUX  576C TIME WARNER CBL INFO SVCS (CA) DBA TIME WARNER CAB 730   2012-04-06   

<< 1 2 3 4 5 6 7 8 9 >>

Last updated: Thu, 05 Feb 2026 23:41:55 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.