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: GDRPMIBL57Z

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
231-534 A Traverse City MI 7421 AT&T - LOCAL 348      
231-534 9 Traverse City MI 7421 AT&T - LOCAL 348      
269-216 A Kalamazoo MI 7421 AT&T - LOCAL 348      
269-216 2 Kalamazoo MI 7421 AT&T - LOCAL 348      
269-398 A Three Oaks MI 7421 AT&T - LOCAL 348      
269-398 9 Three Oaks MI 7421 AT&T - LOCAL 348   2022-10-21   
616-802 A Grand Rapids MI 7421 AT&T - LOCAL 348      
616-802 1 Grand Rapids MI 7421 AT&T - LOCAL 348      
616-802 3 Grand Rapids MI 7421 AT&T - LOCAL 348      
616-802 5 Grand Rapids MI 7421 AT&T - LOCAL 348      
616-802 6 Grand Rapids MI 7421 AT&T - LOCAL 348      
616-802 9 Grand Rapids MI 7421 AT&T - LOCAL 348      
616-834 A Holland MI 7421 AT&T - LOCAL 348      
616-834 9 Holland MI 7421 AT&T - LOCAL 348      

Last updated: Thu, 20 Nov 2025 13:34:34 UTC

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