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.

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
313-677 A Detroit Zone 4 MI 965H FRACTEL, LLC 340      
313-688 A Detroit Zone 5 MI 965H FRACTEL, LLC 340      
313-900 A Detroit Zone 5 MI 965H FRACTEL, LLC 340      
313-944 A Detroit Zone 2 MI 965H FRACTEL, LLC 340      
313-946 A Detroit Zone 2 MI 965H FRACTEL, LLC 340      
586-300 A Mount Clemens MI 965H FRACTEL, LLC 340      
586-345 A Mount Clemens MI 965H FRACTEL, LLC 340      
586-400 A Romeo MI 965H FRACTEL, LLC 340      
586-600 A Center Line MI 965H FRACTEL, LLC 340      
734-356 A Ann Arbor MI 965H FRACTEL, LLC 340      
734-499 A Romulus MI 965H FRACTEL, LLC 340      
734-599 A Lost Peninsula MI 965H FRACTEL, LLC 340      
734-766 A Erie MI 965H FRACTEL, LLC 340      
734-877 A Wayne MI 965H FRACTEL, LLC 340      
734-933 A Wyandotte MI 965H FRACTEL, LLC 340      
734-966 A Lost Peninsula MI 965H FRACTEL, LLC 340      
810-345 A Flint MI 965H FRACTEL, LLC 340      
810-799 A Grand Blanc MI 965H FRACTEL, LLC 340      
947-300 A Clarkston MI 965H FRACTEL, LLC 340      
947-336 A Northville MI 965H FRACTEL, LLC 340      
947-345 A Oxford MI 965H FRACTEL, LLC 340      
947-348 A South Lyon MI 965H FRACTEL, LLC 340      
947-400 A West Bloomfield MI 965H FRACTEL, LLC 340      
947-500 A Pontiac MI 965H FRACTEL, LLC 340      
947-529 A Birmingham MI 965H FRACTEL, LLC 340      
947-600 A Northville MI 965H FRACTEL, LLC 340      
947-900 A Southfield MI 965H FRACTEL, LLC 340      

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

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