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: BRHMMIMNDS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
248-203 A Birmingham MI 9323 AMERITECH MICHIGAN 340      
248-258 A Birmingham MI 9323 AMERITECH MICHIGAN 340      
248-433 A Birmingham MI 9323 AMERITECH MICHIGAN 340      
248-540 A Birmingham MI 9323 AMERITECH MICHIGAN 340      
248-549 A Royal Oak MI 9323 AMERITECH MICHIGAN 340      
248-554 A Royal Oak MI 9323 AMERITECH MICHIGAN 340      
248-593 A Birmingham MI 9323 AMERITECH MICHIGAN 340      
248-594 A Birmingham MI 9323 AMERITECH MICHIGAN 340      
248-642 A Birmingham MI 9323 AMERITECH MICHIGAN 340      
248-644 A Birmingham MI 9323 AMERITECH MICHIGAN 340      
248-645 A Birmingham MI 9323 AMERITECH MICHIGAN 340      
248-646 A Birmingham MI 9323 AMERITECH MICHIGAN 340      
248-647 A Birmingham MI 9323 AMERITECH MICHIGAN 340      
248-723 A Birmingham MI 9323 AMERITECH MICHIGAN 340      
248-901 A Birmingham MI 9323 AMERITECH MICHIGAN 340      
248-988 A Birmingham MI 9323 AMERITECH MICHIGAN 340      

Last updated: Sat, 08 Jun 2019 01:52:21 UTC

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