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: ABHGMIMNDS0

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
248-952 A Birmingham MI 9323 MICHIGAN BELL TEL CO 340      
248-952 0 Birmingham MI 9323 MICHIGAN BELL TEL CO 340      
248-952 1 Birmingham MI 9323 MICHIGAN BELL TEL CO 340      
248-952 2 Birmingham MI 9323 MICHIGAN BELL TEL CO 340      
248-952 3 Birmingham MI 9323 MICHIGAN BELL TEL CO 340      
248-952 5 Birmingham MI 9323 MICHIGAN BELL TEL CO 340      
248-952 6 Birmingham MI 9323 MICHIGAN BELL TEL CO 340      
248-964 A Troy MI 9323 MICHIGAN BELL TEL CO 340      

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Last updated: Thu, 05 Feb 2026 23:41:55 UTC

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