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: Alameda DA, CA

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

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
510-306 7 SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2014-04-13   
510-306 8 HYWRCAMCDMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2013-05-23   
510-306 9 OKLECAZV1MD  6529 T-MOBILE USA, INC. 722   2024-05-03   
510-337 A ALMDCA11DS0  9740 PACIFIC BELL 722      
510-337 0 ALMDCA11DS0  9740 PACIFIC BELL 722      
510-337 1 ALMDCA11DS0  9740 PACIFIC BELL 722      
510-337 2 ALMDCA11DS0  9740 PACIFIC BELL 722      
510-337 3 ALMDCA11DS0  9740 PACIFIC BELL 722      
510-337 4 SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2009-01-14   
510-337 5 ALMDCA11DS0  9740 PACIFIC BELL 722      
510-337 6 ALMDCA11DS0  9740 PACIFIC BELL 722      
510-337 7 ALMDCA11DS0  9740 PACIFIC BELL 722      
510-337 8 ALMDCA11DS0  9740 PACIFIC BELL 722      
510-337 9 ALMDCA11DS0  9740 PACIFIC BELL 722      
510-355 A   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722      
510-355 0   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722      
510-355 1   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722      
510-355 2 OKLECAZV1MD  5562 METROPCS, INC. 722   2005-03-07   
510-355 3 SNFCCA01GT0  6010 NEW CINGULAR WIRELESS PCS, LLC 722   2025-01-12   
510-355 4 OKLECAZV1MD  5562 METROPCS, INC. 722   2005-03-07   
510-355 5 OKLECAZV1MD  5562 METROPCS, INC. 722   2005-03-07   
510-355 6 OKLECAZV1MD  5562 METROPCS, INC. 722   2005-03-07   
510-355 7 OKLECAZV1MD  5562 METROPCS, INC. 722   2005-03-07   
510-355 8 SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2009-01-14   
510-355 9 SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2024-07-27   
510-373 A SNFCCAMKDS3  649C ONVOY, LLC - CA 722      
510-373 0 SNFCCAMKDS3  649C ONVOY, LLC - CA 722      
510-373 1 SNFCCAMKDS3  649C ONVOY, LLC - CA 722      
510-373 2 SNFCCAMKDS3  649C ONVOY, LLC - CA 722      
510-373 3 SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2005-03-06   
510-373 4 SNFCCA21XNZ  624H ONVOY SPECTRUM, LLC 722   2022-04-19   
510-373 5 SNJSCAYB0MD  671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 722   2001-09-03   
510-373 6 HYWRCA115MD  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 722   2005-06-03   
510-373 7 SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2005-06-03   
510-373 8 SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2005-06-03   
510-373 9 SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2007-01-27   
510-473 A HYWRCA115MD  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 722      
510-473 0 HYWRCA115MD  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 722      
510-473 1 HYWRCA115MD  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 722      
510-473 2 SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722   2009-11-21   
510-473 3 HYWRCA115MD  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 722   2007-07-09   
510-473 4 SNFCCA01GT0  6010 NEW CINGULAR WIRELESS PCS, LLC 722   2025-01-12   
510-473 5 SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722   2009-11-21   
510-473 6 SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722   2009-11-21   
510-473 7 SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722   2009-11-21   
510-473 8 SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722   2013-06-07   
510-473 9 HYWRCA115MD  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 722      
510-519 A HYWRCAMCDMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722      
510-519 0 HYWRCAMCDMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2017-10-06   
510-519 1 SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722   2019-02-11   

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

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

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.