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: PLMOMIFA7MD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
248-237 A Auburn Heights MI 7421 AT&T LOCAL 340      
248-327 A Southfield MI 7421 AT&T LOCAL 340      
248-629 A Royal Oak MI 7421 AT&T LOCAL 340      
248-688 A Troy MI 7421 AT&T LOCAL 340      
248-747 A West Bloomfield MI 7421 AT&T LOCAL 340      
248-987 A Farmington MI 7421 AT&T LOCAL 340      
586-486 A Center Line MI 7421 AT&T LOCAL 340      
734-335 A Plymouth MI 7421 AT&T LOCAL 340      
734-757 A Ann Arbor MI 7421 AT&T LOCAL 340      
734-840 A Romulus MI 7421 AT&T LOCAL 340      
734-855 A Livonia MI 7421 AT&T LOCAL 340      
734-895 A Wayne MI 7421 AT&T LOCAL 340      
810-941 A Port Huron MI 7421 AT&T LOCAL 340      

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

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.