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.
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Switch: CYTNCA11DS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
925-524 A Clayton CA 9740 PACIFIC BELL 722      
925-524 0 Clayton CA 9740 PACIFIC BELL 722      
925-672 A Clayton CA 9740 PACIFIC BELL 722      
925-673 A Clayton CA 9740 PACIFIC BELL 722      
925-673 0 Clayton CA 9740 PACIFIC BELL 722      
925-673 1 Clayton CA 9740 PACIFIC BELL 722      
925-673 2 Clayton CA 9740 PACIFIC BELL 722      
925-673 3 Clayton CA 9740 PACIFIC BELL 722      
925-673 5 Clayton CA 9740 PACIFIC BELL 722      
925-673 7 Clayton CA 9740 PACIFIC BELL 722      
925-673 8 Clayton CA 9740 PACIFIC BELL 722      
925-673 9 Clayton CA 9740 PACIFIC BELL 722      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

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