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: FLNTMIMNDS0

Remotes:

Switch Switch name Switch type
BYRNMIBYRSA  BYRON  5ER 
HLLYMIHYRS1  HOLLY  EXM 
NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
810-422 A Flint MI 9323 MICHIGAN BELL TEL CO 340      
810-422 0 Flint MI 9323 MICHIGAN BELL TEL CO 340      
810-422 1 Flint MI 9323 MICHIGAN BELL TEL CO 340      
810-422 2 Flint MI 9323 MICHIGAN BELL TEL CO 340      
810-422 6 Flint MI 9323 MICHIGAN BELL TEL CO 340      
810-760 A Flint MI 9323 MICHIGAN BELL TEL CO 340      

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

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