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: IPLCINGNCM0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
317-235 A Indianapolis IN 9748 AMERICAN MESSAGING SERVICES, LLC 336      
317-301 A Indianapolis IN 9748 AMERICAN MESSAGING SERVICES, LLC 336      
317-302 A Indianapolis IN 9748 AMERICAN MESSAGING SERVICES, LLC 336      
317-304 A Indianapolis IN 9748 AMERICAN MESSAGING SERVICES, LLC 336      
317-305 A Indianapolis IN 9748 AMERICAN MESSAGING SERVICES, LLC 336      
317-310 A Indianapolis IN 9748 AMERICAN MESSAGING SERVICES, LLC 336      
317-312 A Indianapolis IN 9748 AMERICAN MESSAGING SERVICES, LLC 336      
317-367 A Indianapolis IN 9748 AMERICAN MESSAGING SERVICES, LLC 336      
317-368 A Indianapolis IN 9748 AMERICAN MESSAGING SERVICES, LLC 336      
317-404 A Indianapolis IN 9748 AMERICAN MESSAGING SERVICES, LLC 336      
317-553 A Indianapolis IN 9748 AMERICAN MESSAGING SERVICES, LLC 336      
317-928 A Indianapolis IN 9748 AMERICAN MESSAGING SERVICES, LLC 336      

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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