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 >>

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
510-808 5   318J COMCAST IP PHONE, LLC 722   2012-12-03   
510-808 6   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2014-02-27   
510-808 7   318J COMCAST IP PHONE, LLC 722   2013-08-15   
510-808 8   9740 PACIFIC BELL 722      
510-808 9   624H ONVOY SPECTRUM, LLC 722   2024-10-20   
510-813 A SNFCCA01GT0  6010 NEW CINGULAR WIRELESS PCS, LLC 722      
510-816 A SNFCCA01GT0  6010 NEW CINGULAR WIRELESS PCS, LLC 722      
510-817 A OKLDCA03DS2  9740 PACIFIC BELL 722      
510-817 0   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2010-12-13   
510-817 1   9740 PACIFIC BELL 722      
510-817 2   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2013-11-04   
510-817 3   9740 PACIFIC BELL 722      
510-817 4   516C AT&T CORP. 722   2006-06-30   
510-817 5   9740 PACIFIC BELL 722      
510-817 6   7145 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 722   2016-11-21   
510-817 7   9740 PACIFIC BELL 722      
510-817 8   9740 PACIFIC BELL 722      
510-817 9   9740 PACIFIC BELL 722      
510-821 A HYWRCAMCDMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722      
510-821 0   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722      
510-821 1   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722      
510-821 2   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722      
510-821 3   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722      
510-821 4   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722      
510-821 5   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722      
510-821 6   671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 722   2016-08-28   
510-821 7   671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 722   2016-08-28   
510-821 8   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722      
510-821 9   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722      
510-823 A OKLECAZV1MD  6529 T-MOBILE USA, INC. 722      
510-823 0   981E BANDWIDTH.COM CLEC, LLC - CA 722   2015-07-02   
510-823 1   6529 T-MOBILE USA, INC. 722   2021-01-01   
510-823 2   516C AT&T CORP. 722   2014-05-16   
510-823 3   6529 T-MOBILE USA, INC. 722      
510-823 4   6529 T-MOBILE USA, INC. 722      
510-823 5   6529 T-MOBILE USA, INC. 722      
510-823 6   6529 T-MOBILE USA, INC. 722      
510-823 7   6529 T-MOBILE USA, INC. 722      
510-823 8   5562 METROPCS, INC. 722      
510-823 9   5562 METROPCS, INC. 722      
510-827 A OKLECAZV1MD  5562 METROPCS, INC. 722      
510-827 0   6529 T-MOBILE USA, INC. 722   2006-04-06   
510-827 1   981E BANDWIDTH.COM CLEC, LLC - CA 722   2014-10-10   
510-827 2   6529 T-MOBILE USA, INC. 722   2007-04-05   
510-827 3   6529 T-MOBILE USA, INC. 722   2008-02-14   
510-827 4   6010 NEW CINGULAR WIRELESS PCS, LLC 722   2025-01-08   
510-827 5   5562 METROPCS, INC. 722   2002-12-16   
510-827 6   5562 METROPCS, INC. 722   2002-12-16   
510-827 7   5562 METROPCS, INC. 722   2002-12-16   
510-827 8   5562 METROPCS, INC. 722   2002-12-16   
510-827 9   5562 METROPCS, INC. 722   2002-12-16   
510-830 A   515J IP HORIZON LLC 722      
510-830 0   515J IP HORIZON LLC 722      
510-830 1   515J IP HORIZON LLC 722      
510-830 2   515J IP HORIZON LLC 722      
510-830 3   671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 722   2008-11-16   
510-830 4   515J IP HORIZON LLC 722      
510-830 5   5562 METROPCS, INC. 722   2002-12-17   
510-830 6   5562 METROPCS, INC. 722   2002-12-17   
510-830 7   5562 METROPCS, INC. 722   2002-12-17   
510-830 8   5562 METROPCS, INC. 722   2002-12-17   
510-830 9   5562 METROPCS, INC. 722   2002-12-17   
510-832 A OKLDCA03DS2  9740 PACIFIC BELL 722      
510-832 0   9740 PACIFIC BELL 722      
510-832 1   9740 PACIFIC BELL 722      
510-832 2   9740 PACIFIC BELL 722      
510-832 3   9740 PACIFIC BELL 722      
510-832 4   9740 PACIFIC BELL 722      
510-832 5   9740 PACIFIC BELL 722      
510-832 6   9740 PACIFIC BELL 722      
510-832 7   9740 PACIFIC BELL 722      
510-832 8   9740 PACIFIC BELL 722      
510-832 9   515J IP HORIZON LLC 722   2021-05-01   
510-834 A OKLDCA03DS2  9740 PACIFIC BELL 722      
510-835 A OKLDCA03DS2  9740 PACIFIC BELL 722      
510-836 A OKLDCA03DS2  9740 PACIFIC BELL 722      
510-836 0   9740 PACIFIC BELL 722      
510-836 1   9740 PACIFIC BELL 722      
510-836 2   9740 PACIFIC BELL 722      
510-836 3   9740 PACIFIC BELL 722      
510-836 4   9740 PACIFIC BELL 722      
510-836 5   6529 T-MOBILE USA, INC. 722   2021-08-29   
510-836 6   9740 PACIFIC BELL 722      
510-836 7   9740 PACIFIC BELL 722      
510-836 8   9740 PACIFIC BELL 722      
510-836 9   6529 T-MOBILE USA, INC. 722   2021-08-29   
510-839 A OKLDCA03DS4  9740 PACIFIC BELL 722      
510-840 A SNFCCAMKX1X  9262 UTILITY TELECOM GROUP, LLC - CA 722      
510-844 A HYWRCA115MD  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 722      
510-844 0   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 722      
510-844 1   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 722      
510-844 2   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 722      
510-844 3   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 722      
510-844 4   318J COMCAST IP PHONE, LLC 722   2015-03-13   
510-844 5   671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 722   2012-01-12   
510-844 6   671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 722   2013-08-31   
510-844 7   671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 722   2013-08-31   
510-844 8   829J PAETEC ITEL, LLC 722   2015-07-30   
510-844 9   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 722      
510-851 A HYWRCAMCDMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722      

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 >>

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

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.