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.

Switch: CNCRCADOCM5

<< 1 2

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
925-389 A Danville CA 6010 NEW CINGULAR WIRELESS PCS, LLC 722      
925-390 A East Contra Costa CA 6010 NEW CINGULAR WIRELESS PCS, LLC 722      
925-408 A Concord CA 6010 NEW CINGULAR WIRELESS PCS, LLC 722      
925-413 A Dublin-San Ramon CA 6010 NEW CINGULAR WIRELESS PCS, LLC 722      
925-437 A Antioch CA 6010 NEW CINGULAR WIRELESS PCS, LLC 722      
925-451 A Walnut Creek CA 6010 NEW CINGULAR WIRELESS PCS, LLC 722      
925-481 A Antioch CA 6010 NEW CINGULAR WIRELESS PCS, LLC 722      
925-487 A Dublin-San Ramon CA 6010 NEW CINGULAR WIRELESS PCS, LLC 722      
925-502 A Danville CA 6010 NEW CINGULAR WIRELESS PCS, LLC 722      
925-504 A Pittsburg West CA 6010 NEW CINGULAR WIRELESS PCS, LLC 722      
925-514 A Martinez CA 6010 NEW CINGULAR WIRELESS PCS, LLC 722      
925-540 A Danville CA 6010 NEW CINGULAR WIRELESS PCS, LLC 722   2025-01-11   
925-548 A Dublin-San Ramon CA 6010 NEW CINGULAR WIRELESS PCS, LLC 722      
925-549 A Dublin-San Ramon CA 6010 NEW CINGULAR WIRELESS PCS, LLC 722      
925-550 A Antioch CA 6010 NEW CINGULAR WIRELESS PCS, LLC 722      
925-640 A Dublin-San Ramon CA 6010 NEW CINGULAR WIRELESS PCS, LLC 722      
925-642 A Antioch CA 6010 NEW CINGULAR WIRELESS PCS, LLC 722      
925-683 A Danville CA 6010 NEW CINGULAR WIRELESS PCS, LLC 722      
925-698 A Pittsburg CA 6010 NEW CINGULAR WIRELESS PCS, LLC 722      
925-699 A Pleasanton CA 6010 NEW CINGULAR WIRELESS PCS, LLC 722      
925-759 A Antioch CA 6010 NEW CINGULAR WIRELESS PCS, LLC 722      
925-818 A Walnut Creek CA 6010 NEW CINGULAR WIRELESS PCS, LLC 722      
925-819 A Dublin-San Ramon CA 6010 NEW CINGULAR WIRELESS PCS, LLC 722      
925-858 A Dublin-San Ramon CA 6010 NEW CINGULAR WIRELESS PCS, LLC 722      
925-876 A Walnut Creek CA 6010 NEW CINGULAR WIRELESS PCS, LLC 722      
925-890 A Concord CA 6010 NEW CINGULAR WIRELESS PCS, LLC 722      
925-899 A Walnut Creek CA 6010 NEW CINGULAR WIRELESS PCS, LLC 722      
925-963 A Pleasanton CA 6010 NEW CINGULAR WIRELESS PCS, LLC 722      
925-980 A Livermore CA 6010 NEW CINGULAR WIRELESS PCS, LLC 722      
925-997 A Dublin-San Ramon CA 6010 NEW CINGULAR WIRELESS PCS, LLC 722      
925-998 A Pleasanton CA 6010 NEW CINGULAR WIRELESS PCS, LLC 722      

<< 1 2

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

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.