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.

Palo Alto, CA

<< 1 2 3 4 5 6 7 8 9 10 11 12 >>

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
650-407 A HYWRCAMCDMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722      
650-407 0   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2018-07-08   
650-407 1   649C ONVOY, LLC - CA 722   2018-09-22   
650-407 2   649C ONVOY, LLC - CA 722   2018-09-22   
650-407 3   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2019-08-28   
650-407 4   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2019-09-30   
650-407 5   649C ONVOY, LLC - CA 722   2019-03-08   
650-407 6   649C ONVOY, LLC - CA 722   2019-03-08   
650-407 7   6010 NEW CINGULAR WIRELESS PCS, LLC 722   2018-08-27   
650-407 8   6010 NEW CINGULAR WIRELESS PCS, LLC 722   2018-08-27   
650-407 9   6010 NEW CINGULAR WIRELESS PCS, LLC 722   2018-08-27   
650-422 A HYWRCAMCDMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722      
650-422 0   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2013-06-03   
650-422 1   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2013-06-16   
650-422 2   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2013-06-21   
650-422 3   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2013-06-21   
650-422 4   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2013-07-06   
650-422 5   145J TERRA NOVA TELECOM INC. 722   2023-11-16   
650-422 6   7145 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 722   2013-09-13   
650-422 7   671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 722   2013-08-31   
650-422 8   6010 NEW CINGULAR WIRELESS PCS, LLC 722   2013-07-19   
650-422 9   6529 T-MOBILE USA, INC. 722   2013-06-06   
650-424 A PLALCA12DS0  9740 PACIFIC BELL 722      
650-424 0   9740 PACIFIC BELL 722      
650-424 1   9740 PACIFIC BELL 722      
650-424 2   9740 PACIFIC BELL 722      
650-424 3   9740 PACIFIC BELL 722      
650-424 4   9740 PACIFIC BELL 722      
650-424 5   9740 PACIFIC BELL 722      
650-424 6   9740 PACIFIC BELL 722      
650-424 7   9262 UTILITY TELECOM GROUP, LLC - CA 722      
650-424 8   9740 PACIFIC BELL 722      
650-424 9   9740 PACIFIC BELL 722      
650-427 A HYWRCAMCDS0  7240 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 722      
650-427 0   981E BANDWIDTH.COM CLEC, LLC - CA 722   2010-02-26   
650-427 1   7240 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 722   2007-02-10   
650-427 2   7240 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 722   2007-02-10   
650-427 3   7240 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 722   2007-02-10   
650-427 4   7240 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 722   2007-02-10   
650-427 5   7240 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 722   2007-02-10   
650-427 6   7240 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 722   2007-02-10   
650-427 7   7240 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 722   2007-02-10   
650-427 8   7240 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 722   2007-02-10   
650-427 9   981E BANDWIDTH.COM CLEC, LLC - CA 722   2010-02-26   
650-433 A HYWRCA115MD  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 722      
650-433 0   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 722      
650-433 1   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 722      
650-433 2   671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 722   2012-01-12   
650-433 3   671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 722   2007-12-27   
650-433 4   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 722      
650-433 5   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 722   2006-09-15   
650-433 6   6529 T-MOBILE USA, INC. 722   2022-04-19   
650-433 7   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 722      
650-433 8   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 722   2006-09-15   
650-433 9   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2012-01-15   
650-441 A HYWRCAMCDMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722      
650-441 0   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2015-10-19   
650-441 1   7145 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 722   2017-02-22   
650-441 2   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2016-06-14   
650-441 3   7145 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 722   2017-02-14   
650-441 4   6529 T-MOBILE USA, INC. 722   2015-10-20   
650-441 5   6529 T-MOBILE USA, INC. 722   2015-10-20   
650-441 6   6529 T-MOBILE USA, INC. 722   2015-10-20   
650-441 7   6529 T-MOBILE USA, INC. 722   2015-10-20   
650-441 8   6529 T-MOBILE USA, INC. 722   2015-10-20   
650-441 9   6010 NEW CINGULAR WIRELESS PCS, LLC 722   2015-10-20   
650-444 A OKLECAZV1MD  6529 T-MOBILE USA, INC. 722      
650-444 0   6529 T-MOBILE USA, INC. 722      
650-444 1   6529 T-MOBILE USA, INC. 722      
650-444 2   6529 T-MOBILE USA, INC. 722      
650-444 3   6529 T-MOBILE USA, INC. 722      
650-444 4   6529 T-MOBILE USA, INC. 722      
650-444 5   6529 T-MOBILE USA, INC. 722      
650-444 6   6529 T-MOBILE USA, INC. 722      
650-444 7   6529 T-MOBILE USA, INC. 722      
650-444 8   6529 T-MOBILE USA, INC. 722      
650-444 9   6529 T-MOBILE USA, INC. 722      
650-460 A SNTDCAUJCM9  6010 NEW CINGULAR WIRELESS PCS, LLC 722      
650-460 0   6010 NEW CINGULAR WIRELESS PCS, LLC 722   2015-07-26   
650-460 1   649C ONVOY, LLC - CA 722   2014-12-20   
650-460 2   649C ONVOY, LLC - CA 722   2014-12-20   
650-460 3   649C ONVOY, LLC - CA 722   2014-12-20   
650-460 4   6010 NEW CINGULAR WIRELESS PCS, LLC 722   2015-07-26   
650-460 5   515J IP HORIZON LLC 722   2015-09-05   
650-460 6   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2015-08-30   
650-460 7   981E BANDWIDTH.COM CLEC, LLC - CA 722   2015-08-23   
650-460 8   981E BANDWIDTH.COM CLEC, LLC - CA 722   2015-08-23   
650-460 9   6010 NEW CINGULAR WIRELESS PCS, LLC 722   2014-12-01   
650-461 A PLALCA12DS0  9740 PACIFIC BELL 722      
650-461 0   5562 METROPCS, INC. 722   2010-10-21   
650-461 1   9740 PACIFIC BELL 722      
650-461 2   9740 PACIFIC BELL 722      
650-461 3   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2006-07-15   
650-461 4   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2010-12-24   
650-461 5   9740 PACIFIC BELL 722      
650-461 6   9740 PACIFIC BELL 722      
650-461 7   9740 PACIFIC BELL 722      
650-461 8   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2005-07-18   
650-461 9   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2005-07-18   
650-462 A PLALCA02DS0  9740 PACIFIC BELL 722      

<< 1 2 3 4 5 6 7 8 9 10 11 12 >>

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.