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.

San Jose: South DA, CA

1 2 3 4 5 6 7 8 9 10 >>

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
408-223 A SNJSCA15DS0  9740 PACIFIC BELL 722      
408-223 0   9740 PACIFIC BELL 722      
408-223 1   9740 PACIFIC BELL 722      
408-223 2   9740 PACIFIC BELL 722      
408-223 3   9740 PACIFIC BELL 722      
408-223 4   9740 PACIFIC BELL 722      
408-223 5   6010 NEW CINGULAR WIRELESS PCS, LLC 722   2008-12-18   
408-223 6   9740 PACIFIC BELL 722      
408-223 7   9740 PACIFIC BELL 722      
408-223 8   9740 PACIFIC BELL 722      
408-223 9   9740 PACIFIC BELL 722      
408-224 A SNJSCA13DS0  9740 PACIFIC BELL 722      
408-225 A SNJSCA13DS0  9740 PACIFIC BELL 722      
408-226 A SNJSCA13DS0  9740 PACIFIC BELL 722      
408-227 A SNJSCA13DS0  9740 PACIFIC BELL 722      
408-229 A SNJSCA13DS0  9740 PACIFIC BELL 722      
408-229 0   9740 PACIFIC BELL 722      
408-229 1   9740 PACIFIC BELL 722      
408-229 2   9740 PACIFIC BELL 722      
408-229 3   6529 T-MOBILE USA, INC. 722   2006-01-05   
408-229 4   9740 PACIFIC BELL 722      
408-229 5   9740 PACIFIC BELL 722      
408-229 6   9740 PACIFIC BELL 722      
408-229 7   9740 PACIFIC BELL 722      
408-229 8   9740 PACIFIC BELL 722      
408-229 9   9740 PACIFIC BELL 722      
408-238 A SNJSCA15DS0  9740 PACIFIC BELL 722      
408-239 A SNJSCA15DS0  9740 PACIFIC BELL 722      
408-239 0   9740 PACIFIC BELL 722      
408-239 1   9740 PACIFIC BELL 722      
408-239 2   9740 PACIFIC BELL 722      
408-239 3   6010 NEW CINGULAR WIRELESS PCS, LLC 722   2002-11-30   
408-239 4   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2005-08-23   
408-239 5   9740 PACIFIC BELL 722      
408-239 6   6010 NEW CINGULAR WIRELESS PCS, LLC 722   2002-11-30   
408-239 7   6010 NEW CINGULAR WIRELESS PCS, LLC 722   2004-11-15   
408-239 8   9740 PACIFIC BELL 722      
408-239 9   6010 NEW CINGULAR WIRELESS PCS, LLC 722   2002-11-30   
408-256 A SNJSCA13DS0  9740 PACIFIC BELL 722      
408-256 0   981E BANDWIDTH.COM CLEC, LLC - CA 722   2008-11-20   
408-256 1   981E BANDWIDTH.COM CLEC, LLC - CA 722   2008-11-20   
408-256 2   981E BANDWIDTH.COM CLEC, LLC - CA 722   2008-11-20   
408-256 3   981E BANDWIDTH.COM CLEC, LLC - CA 722   2008-11-20   
408-256 4   671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 722   2008-11-16   
408-256 5   9740 PACIFIC BELL 722      
408-256 6   649C ONVOY, LLC - CA 722   2008-10-19   
408-256 7   649C ONVOY, LLC - CA 722   2008-10-19   
408-256 8   649C ONVOY, LLC - CA 722   2008-10-19   
408-256 9   5562 METROPCS, INC. 722   2008-12-07   
408-264 A SNJSCA14DS0  9740 PACIFIC BELL 722      
408-265 A SNJSCA14DS0  9740 PACIFIC BELL 722      
408-266 A SNJSCA14DS0  9740 PACIFIC BELL 722      
408-267 A SNJSCA14DS0  9740 PACIFIC BELL 722      
408-268 A SNJSCA18DS0  9740 PACIFIC BELL 722      
408-269 A SNJSCA14DS0  9740 PACIFIC BELL 722      
408-270 A SNJSCA15DS0  9740 PACIFIC BELL 722      
408-274 A SNJSCA15DS0  9740 PACIFIC BELL 722      
408-281 A SNJSCA13DS0  9740 PACIFIC BELL 722      
408-284 A SNJSCA13DS0  9740 PACIFIC BELL 722      
408-284 0   9740 PACIFIC BELL 722      
408-284 1   9740 PACIFIC BELL 722      
408-284 2   9740 PACIFIC BELL 722      
408-284 3   9740 PACIFIC BELL 722      
408-284 4   9740 PACIFIC BELL 722      
408-284 5   9740 PACIFIC BELL 722      
408-284 6   9740 PACIFIC BELL 722      
408-284 7   9740 PACIFIC BELL 722      
408-284 8   9740 PACIFIC BELL 722      
408-284 9   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2009-09-27   
408-300 A OKLDCA03XOY  318J COMCAST IP PHONE, LLC 722      
408-300 0   318J COMCAST IP PHONE, LLC 722   2008-09-25   
408-300 1   318J COMCAST IP PHONE, LLC 722   2008-09-25   
408-300 2   6010 NEW CINGULAR WIRELESS PCS, LLC 722   2008-09-26   
408-300 3   6010 NEW CINGULAR WIRELESS PCS, LLC 722   2008-09-26   
408-300 4   6010 NEW CINGULAR WIRELESS PCS, LLC 722   2008-09-26   
408-300 5   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 722   2009-08-15   
408-300 6   649C ONVOY, LLC - CA 722   2008-12-15   
408-300 7   649C ONVOY, LLC - CA 722   2008-12-15   
408-300 8   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2008-10-16   
408-300 9   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2010-07-20   
408-323 A SNJSCA18DS0  9740 PACIFIC BELL 722      
408-323 0   9740 PACIFIC BELL 722      
408-323 1   9740 PACIFIC BELL 722      
408-323 2   9740 PACIFIC BELL 722      
408-323 3   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 722   2005-09-15   
408-323 4   9740 PACIFIC BELL 722      
408-323 5   9740 PACIFIC BELL 722      
408-323 6   9740 PACIFIC BELL 722      
408-323 7   9740 PACIFIC BELL 722      
408-323 8   9740 PACIFIC BELL 722      
408-323 9   9740 PACIFIC BELL 722      
408-333 A SNFCCASY5MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722      
408-333 0   515J IP HORIZON LLC 722   2021-04-23   
408-333 1   6529 T-MOBILE USA, INC. 722   2021-05-07   
408-333 2   6529 T-MOBILE USA, INC. 722   2021-05-07   
408-333 3   939H COMMIO, LLC 722   2021-06-20   
408-333 4   6529 T-MOBILE USA, INC. 722   2021-05-07   
408-333 5   6529 T-MOBILE USA, INC. 722   2021-05-07   
408-333 6   939H COMMIO, LLC 722   2021-06-20   
408-333 7   939H COMMIO, LLC 722   2021-06-20   

1 2 3 4 5 6 7 8 9 10 >>

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

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.