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: RSVLMINRDS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
586-285 A Roseville MI 9323 MICHIGAN BELL TEL CO 340      
586-293 A Roseville MI 9323 MICHIGAN BELL TEL CO 340      
586-294 A Roseville MI 9323 MICHIGAN BELL TEL CO 340      
586-296 A Roseville MI 9323 MICHIGAN BELL TEL CO 340      
586-415 A Roseville MI 9323 MICHIGAN BELL TEL CO 340      
586-741 A Mount Clemens MI 9323 MICHIGAN BELL TEL CO 340      
586-746 A Mount Clemens MI 9323 MICHIGAN BELL TEL CO 340      
586-790 A Mount Clemens MI 9323 MICHIGAN BELL TEL CO 340      
586-791 A Mount Clemens MI 9323 MICHIGAN BELL TEL CO 340      
586-792 A Mount Clemens MI 9323 MICHIGAN BELL TEL CO 340      

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

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