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: GDRPMIBLXMX

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
231-292 4 Whitehall MI 7421 AT&T LOCAL 348   2013-07-15   
231-480 5 Ludington MI 7421 AT&T LOCAL 348   2006-07-13   
231-534 A Traverse City MI 7421 AT&T LOCAL 348      
231-534 9 Traverse City MI 7421 AT&T LOCAL 348      
231-580 2 Big Rapids MI 7421 AT&T LOCAL 348   2004-09-24   
231-753 5 Petoskey MI 7421 AT&T LOCAL 348   2006-08-20   
269-216 A Kalamazoo MI 7421 AT&T LOCAL 348      
269-216 2 Kalamazoo MI 7421 AT&T LOCAL 348      
269-591 A Niles MI 7421 AT&T LOCAL 348      
269-591 3 Niles MI 7421 AT&T LOCAL 348      
269-719 4 Battle Creek MI 7421 AT&T LOCAL 348   2004-04-23   
269-727 6 Marshall MI 7421 AT&T LOCAL 348   2004-05-07   
269-757 A Benton Harbor MI 7421 AT&T LOCAL 348      
269-757 9 Benton Harbor MI 7421 AT&T LOCAL 348      
616-523 5 Ionia MI 7421 AT&T LOCAL 348   2006-02-24   
616-730 5 Byron Center MI 7421 AT&T LOCAL 348   2009-11-16   
616-802 A Grand Rapids MI 7421 AT&T LOCAL 348      
616-802 1 Grand Rapids MI 7421 AT&T LOCAL 348      
616-802 3 Grand Rapids MI 7421 AT&T LOCAL 348      
616-802 5 Grand Rapids MI 7421 AT&T LOCAL 348      
616-802 6 Grand Rapids MI 7421 AT&T LOCAL 348      
616-802 9 Grand Rapids MI 7421 AT&T LOCAL 348      
616-834 A Holland MI 7421 AT&T LOCAL 348      
616-834 9 Holland MI 7421 AT&T LOCAL 348      

Last updated: Sun, 28 Feb 2021 19:06:05 UTC

Sponsored by: VoiceMeUp - Corporate VoIP Services

Like this site? We accept donations via PayPal.