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: FLNTMINWDS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
810-230 A Flint MI 9323 MICHIGAN BELL TEL CO 340      
810-230 0 Flint MI 9323 MICHIGAN BELL TEL CO 340      
810-230 1 Flint MI 9323 MICHIGAN BELL TEL CO 340      
810-230 2 Flint MI 9323 MICHIGAN BELL TEL CO 340      
810-230 3 Flint MI 9323 MICHIGAN BELL TEL CO 340      
810-230 5 Flint MI 9323 MICHIGAN BELL TEL CO 340      
810-230 6 Flint MI 9323 MICHIGAN BELL TEL CO 340      
810-230 7 Flint MI 9323 MICHIGAN BELL TEL CO 340      
810-230 8 Flint MI 9323 MICHIGAN BELL TEL CO 340      
810-230 9 Flint MI 9323 MICHIGAN BELL TEL CO 340      
810-715 8 Flint MI 9323 MICHIGAN BELL TEL CO 340      
810-720 A Flint MI 9323 MICHIGAN BELL TEL CO 340      
810-732 A Flint MI 9323 MICHIGAN BELL TEL CO 340      
810-733 A Flint MI 9323 MICHIGAN BELL TEL CO 340      

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

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