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: ANTCCA11DS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
925-522 A Antioch CA 9740 PACIFIC BELL 722      
925-706 A Antioch CA 9740 PACIFIC BELL 722      
925-753 A Antioch CA 9740 PACIFIC BELL 722      
925-754 A Antioch CA 9740 PACIFIC BELL 722      
925-755 A Antioch CA 9740 PACIFIC BELL 722      
925-756 A Antioch CA 9740 PACIFIC BELL 722      
925-757 A Antioch CA 9740 PACIFIC BELL 722      
925-776 A Antioch CA 9740 PACIFIC BELL 722      
925-777 A Antioch CA 9740 PACIFIC BELL 722      
925-778 A Antioch CA 9740 PACIFIC BELL 722      
925-779 A Antioch CA 9740 PACIFIC BELL 722      
925-978 A Antioch CA 9740 PACIFIC BELL 722      

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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