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: IPLSIN03DS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
317-308 A Indianapolis IN 9325 INDIANA BELL TEL CO INC 336      
317-322 A Indianapolis IN 9325 INDIANA BELL TEL CO INC 336      
317-351 A Indianapolis IN 9325 INDIANA BELL TEL CO INC 336      
317-352 A Indianapolis IN 9325 INDIANA BELL TEL CO INC 336      
317-353 A Indianapolis IN 9325 INDIANA BELL TEL CO INC 336      
317-354 A Indianapolis IN 9325 INDIANA BELL TEL CO INC 336      
317-356 A Indianapolis IN 9325 INDIANA BELL TEL CO INC 336      
317-357 A Indianapolis IN 9325 INDIANA BELL TEL CO INC 336      
317-358 A Indianapolis IN 9325 INDIANA BELL TEL CO INC 336      
317-359 A Indianapolis IN 9325 INDIANA BELL TEL CO INC 336      
317-375 A Indianapolis IN 9325 INDIANA BELL TEL CO INC 336      

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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