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: SNRSCA010MD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
408-340 2 Campbell CA 7421 AT&T - LOCAL 722      
415-483 3 Ignacio CA 7421 AT&T - LOCAL 722      
707-227 3 Napa CA 7421 AT&T - LOCAL 722      
707-236 A Santa Rosa CA 7421 AT&T - LOCAL 722      
707-236 1 Santa Rosa CA 7421 AT&T - LOCAL 722      
707-236 3 Santa Rosa CA 7421 AT&T - LOCAL 722      
707-236 9 Santa Rosa CA 7421 AT&T - LOCAL 722      

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

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