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.

Oakland: Main-Piedmont DA, CA

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 >>

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
510-452 9 OKLDCA03DS2  9740 PACIFIC BELL 722      
510-457 A SNRSCA01KMD  7145 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 722      
510-457 0 SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722   2014-10-10   
510-457 1 SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722   2010-02-26   
510-457 2 SNRSCA01KMD  7145 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 722      
510-457 3 SNRSCA01KMD  7145 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 722      
510-457 4 SNRSCA01KMD  7145 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 722      
510-457 5 SNFCCA01GT0  6010 NEW CINGULAR WIRELESS PCS, LLC 722   2005-12-17   
510-457 6 SNFCCA01GT0  6010 NEW CINGULAR WIRELESS PCS, LLC 722   2005-12-17   
510-457 7 SNFCCAMKX1X  9262 UTILITY TELECOM GROUP, LLC - CA 722   2006-05-15   
510-457 8 SNFCCA01GT0  6010 NEW CINGULAR WIRELESS PCS, LLC 722   2005-10-10   
510-457 9 SNRSCA01KMD  7145 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 722      
510-459 A   6529 T-MOBILE USA, INC. 722      
510-459 0 OKLECAZVGT0  6529 T-MOBILE USA, INC. 722      
510-459 1 OKLECAZVGT0  6529 T-MOBILE USA, INC. 722      
510-459 2 OKLECAZVGT0  6529 T-MOBILE USA, INC. 722      
510-459 3 OKLECAZVGT0  6529 T-MOBILE USA, INC. 722      
510-459 4 OKLECAZVGT0  6529 T-MOBILE USA, INC. 722      
510-459 5 OKLECAZVGT0  6529 T-MOBILE USA, INC. 722      
510-459 6 OKLECAZVGT0  6529 T-MOBILE USA, INC. 722      
510-459 7 OKLECAZVGT0  6529 T-MOBILE USA, INC. 722      
510-459 8 OKLECAZVGT0  6529 T-MOBILE USA, INC. 722      
510-459 9   6529 T-MOBILE USA, INC. 722      
510-463 A SNJSCAYB0MD  671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 722      
510-463 0 SNJSCAYB0MD  671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 722      
510-463 1 SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722   2010-02-26   
510-463 2 SNJSCAYB0MD  671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 722      
510-463 3 SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2014-10-31   
510-463 4 SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722   2011-05-07   
510-463 5 SNJSCAYB0MD  671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 722      
510-463 6 SNJSCAYB0MD  671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 722      
510-463 7 OKLECAZVGT0  6529 T-MOBILE USA, INC. 722   2006-09-22   
510-463 8 OKLDCAEBDS0  7718 LEVEL 3 TELECOM OF CALIFORNIA, LP - CA 722   2011-01-28   
510-463 9 SNJSCAYB0MD  671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 722      
510-464 A OKLDCA03DS2  9740 PACIFIC BELL 722      
510-464 0 SNJUCACL1MD  222H LOCAL ACCESS SERVICES LLC - CA 722   2016-09-14   
510-464 1 OKLDCA03DS2  9740 PACIFIC BELL 722      
510-464 2 OKLDCA03DS2  9740 PACIFIC BELL 722      
510-464 3 OKLDCA03DS2  9740 PACIFIC BELL 722      
510-464 4 OKLDCA03DS2  9740 PACIFIC BELL 722      
510-464 5 OKLDCA03DS2  9740 PACIFIC BELL 722      
510-464 6 OKLDCA03DS2  9740 PACIFIC BELL 722      
510-464 7 OKLDCA03DS2  9740 PACIFIC BELL 722      
510-464 8 OKLDCA03DS2  9740 PACIFIC BELL 722      
510-464 9 OKLDCA03DS2  9740 PACIFIC BELL 722      
510-465 A OKLDCA03DS4  9740 PACIFIC BELL 722      
510-466 A OKLDCA03DS2  9740 PACIFIC BELL 722      
510-466 0 OKLDCA03DS2  9740 PACIFIC BELL 722      
510-466 1 SNFCCASY5MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2013-12-28   
510-466 2 OKLDCA03DS2  9740 PACIFIC BELL 722      

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 >>

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.