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: CDRRIADTVMD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
319-491 A Cedar Rapids IA 7421 AT&T - LOCAL 635      
319-491 8 Cedar Rapids IA 7421 AT&T - LOCAL 635      
319-491 9 Cedar Rapids IA 7421 AT&T - LOCAL 635      

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

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