Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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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      
925-672 A Clayton CA 9740 PACIFIC BELL 722      
925-673 A Clayton CA 9740 PACIFIC BELL 722      

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

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