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
650-509 0 HYWRCAMCDMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2016-06-10   
650-509 1 SNFCCAMMDS0  485E ASTOUND BROADBAND, LLC - CA 722   2017-03-02   
650-509 2 OKLECAZV1MD  6529 T-MOBILE USA, INC. 722   2016-08-18   
650-509 3 SNJUCACL3MD  073H TELNYX LLC 722   2017-05-08   
650-509 4 SNFCCASY5MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2017-05-08   
650-509 5 SNJUCACLDS1  373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 722   2016-09-23   
650-509 6   515J IP HORIZON LLC 722   2016-09-14   
650-509 7 OKLECAZV1MD  6529 T-MOBILE USA, INC. 722   2016-06-24   
650-509 8 OKLECAZV1MD  6529 T-MOBILE USA, INC. 722   2016-06-24   
650-509 9 OKLECAZV1MD  6529 T-MOBILE USA, INC. 722   2016-06-24   
650-512 A SNTDCAUJCM9  6010 NEW CINGULAR WIRELESS PCS, LLC 722      
650-512 0 SNJUCACL2MD  197D VONAGE AMERICA LLC 722   2019-12-11   
650-512 1 OKLECAZV1MD  5562 METROPCS, INC. 722   2020-01-02   
650-512 2 SNTDCAUJCM9  6010 NEW CINGULAR WIRELESS PCS, LLC 722   2019-12-09   
650-512 3 SNTDCAUJCM9  6010 NEW CINGULAR WIRELESS PCS, LLC 722   2019-12-09   
650-512 4 SNTDCAUJCM9  6010 NEW CINGULAR WIRELESS PCS, LLC 722   2019-12-09   
650-512 5 SNTDCAUJCM9  6010 NEW CINGULAR WIRELESS PCS, LLC 722   2019-12-09   
650-512 6 SNTDCAUJCM9  6010 NEW CINGULAR WIRELESS PCS, LLC 722   2019-12-09   
650-512 7 SNTDCAUJCM9  6010 NEW CINGULAR WIRELESS PCS, LLC 722   2019-12-09   
650-512 8 SNTDCAUJCM9  6010 NEW CINGULAR WIRELESS PCS, LLC 722   2019-12-09   
650-512 9 SNTDCAUJCM9  6010 NEW CINGULAR WIRELESS PCS, LLC 722   2019-12-09   
650-519 A SNTDCAUJCM9  6010 NEW CINGULAR WIRELESS PCS, LLC 722      
650-519 0 SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2023-09-10   
650-519 1 SNFCCA21XNZ  624H ONVOY SPECTRUM, LLC 722   2022-02-25   
650-519 2 SNFCCA21XNZ  624H ONVOY SPECTRUM, LLC 722   2022-02-25   
650-519 3 SNJUCACLDS1  373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 722   2023-10-19   
650-519 4 HYWRCAMCDMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2022-05-11   
650-519 5 SNTDCAUJCM9  6010 NEW CINGULAR WIRELESS PCS, LLC 722   2022-02-24   
650-519 6 SNTDCAUJCM9  6010 NEW CINGULAR WIRELESS PCS, LLC 722   2022-02-24   
650-519 7 SNTDCAUJCM9  6010 NEW CINGULAR WIRELESS PCS, LLC 722   2022-02-24   
650-519 8 SNTDCAUJCM9  6010 NEW CINGULAR WIRELESS PCS, LLC 722   2022-02-24   
650-519 9 SNTDCAUJCM9  6010 NEW CINGULAR WIRELESS PCS, LLC 722   2022-02-24   
650-521 A OKLDCA03XOY  318J COMCAST IP PHONE, LLC 722      
650-521 0 OKLDCA03XOY  318J COMCAST IP PHONE, LLC 722   2005-09-25   
650-521 1 SNTDCAUJCM9  6010 NEW CINGULAR WIRELESS PCS, LLC 722   2006-05-18   
650-521 2 SNTDCAUJCM9  6010 NEW CINGULAR WIRELESS PCS, LLC 722   2006-05-18   
650-521 3 SNTDCAUJCM9  6010 NEW CINGULAR WIRELESS PCS, LLC 722   2006-05-18   
650-521 4 SNTDCAUJCM9  6010 NEW CINGULAR WIRELESS PCS, LLC 722   2006-05-18   
650-521 5 SNFCCASY5MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2008-02-14   
650-521 6 SNTDCAUJCM9  6010 NEW CINGULAR WIRELESS PCS, LLC 722   2006-10-01   
650-521 7 SNTDCAUJCM9  6010 NEW CINGULAR WIRELESS PCS, LLC 722   2006-10-01   
650-521 8 SNJSCAYB0MD  671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 722   2007-09-10   
650-521 9 SNFCCASY5MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2008-02-14   
650-531 A HYWRCAMCDMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722      
650-531 0 OKLECAZV1MD  5562 METROPCS, INC. 722   2021-03-14   
650-531 1 HYWRCAMCDMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2021-04-22   
650-531 2 SNFCCA21XNZ  624H ONVOY SPECTRUM, LLC 722   2020-07-02   
650-531 3 SNFCCA21XNZ  624H ONVOY SPECTRUM, LLC 722   2020-07-02   
650-531 4 SNFCCA21XNZ  624H ONVOY SPECTRUM, LLC 722   2020-07-02   
650-531 5 HYWRCAMCDMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2020-11-07   
650-531 6 HYWRCAMCDMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2020-11-07   
650-531 7 HYWRCAMCDMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2020-12-01   
650-531 8 SNRSCA01KMD  7145 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 722   2020-08-17   
650-531 9 OKLECAZV1MD  6529 T-MOBILE USA, INC. 722   2020-09-14   
650-543 A SNJSCAYB0MD  671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 722      
650-546 A SNFCCAFJDS0  7145 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 722      
650-546 0   515J IP HORIZON LLC 722   2015-10-31   
650-546 1 SNTDCAUJCM9  6010 NEW CINGULAR WIRELESS PCS, LLC 722   2015-12-21   
650-546 2 SNFCCAFJDS0  7145 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 722   2015-10-31   
650-546 3 SNJSCAYB0MD  671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 722   2015-11-26   
650-546 4 SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2016-01-13   
650-546 5 OKLECAZV1MD  6529 T-MOBILE USA, INC. 722   2015-10-31   
650-546 6 HYWRCAMCDMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2015-11-02   
650-546 7 SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2016-01-13   
650-546 8 SNFCCAFJDS0  7145 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 722   2015-10-30   
650-546 9 OKLECAZV1MD  6529 T-MOBILE USA, INC. 722   2016-01-25   
650-561 A MNPKCA11DS0  9740 PACIFIC BELL 722      
650-561 0 MNPKCA11DS0  9740 PACIFIC BELL 722      
650-561 1 MNPKCA11DS0  9740 PACIFIC BELL 722      
650-561 2 SNTDCAUJCM9  6010 NEW CINGULAR WIRELESS PCS, LLC 722   2011-01-31   
650-561 3 OKLDCA03XOY  318J COMCAST IP PHONE, LLC 722   2006-11-02   
650-561 4 OKLDCA03XOY  318J COMCAST IP PHONE, LLC 722   2006-11-02   
650-561 5 SNTDCAUJCM9  6010 NEW CINGULAR WIRELESS PCS, LLC 722   2011-01-31   
650-561 6 SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722   2011-05-26   
650-561 7 HYWRCA115MD  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 722   2007-06-04   
650-561 8 HYWRCA115MD  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 722   2007-06-04   
650-561 9 MNPKCA11DS0  9740 PACIFIC BELL 722      
650-565 A PLALCA12DS0  9740 PACIFIC BELL 722      
650-566 A PLALCA02DS0  9740 PACIFIC BELL 722      
650-575 A SNTDCAUJCM9  6010 NEW CINGULAR WIRELESS PCS, LLC 722      
650-586 A SNJUCACL3MD  073H TELNYX LLC 722      
650-586 0 SNJUCACL3MD  073H TELNYX LLC 722   2021-03-25   
650-586 1 HYWRCAMCDMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2021-07-12   
650-586 2 HYWRCAMCDMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2021-08-16   
650-586 3 SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2021-07-22   
650-586 4 SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2021-07-22   
650-586 5 SNFCCA21XNZ  624H ONVOY SPECTRUM, LLC 722   2021-05-23   
650-586 6 SNFCCA21XNZ  624H ONVOY SPECTRUM, LLC 722   2021-05-23   
650-586 7 SNJUCACLDS1  373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 722   2021-05-30   
650-586 8 HYWRCAMCDMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2021-06-28   
650-586 9 HYWRCAMCDMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2021-08-30   
650-600 A SNFCCAMKDS3  649C ONVOY, LLC - CA 722      
650-600 0 SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2012-08-11   
650-600 1 SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722   2012-09-06   
650-600 2 OKLECAZV1MD  5562 METROPCS, INC. 722   2012-09-17   
650-600 3 SNFCCASY5MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2012-08-14   
650-600 4 OKLECAZV1MD  5562 METROPCS, INC. 722   2012-09-17   
650-600 5 OKLDCAMP1MD  4733 PAETEC COMMUNICATIONS, INC. - CA 722   2012-09-26   
650-600 6 SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2012-08-11   
650-600 7 SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2012-08-28   

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

Last updated: Sat, 05 Apr 2025 03:03:23 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.