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: GDRPMIBLX8Z

1 2 3 >>

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
231-212 0 Interlochen MI 2550 123.NET, INC. 348   2020-01-04   
231-220 A Muskegon MI 2550 123.NET, INC. 348      
231-220 0 Muskegon MI 2550 123.NET, INC. 348      
231-220 2 Muskegon MI 2550 123.NET, INC. 348   2009-11-23   
231-221 1 Harbor Springs MI 2550 123.NET, INC. 348   2016-11-06   
231-259 2 Shelby MI 2550 123.NET, INC. 348   2016-01-22   
231-440 A Baldwin MI 2550 123.NET, INC. 348      
231-440 0 Baldwin MI 2550 123.NET, INC. 348      
231-441 A Fife Lake MI 2550 123.NET, INC. 348      
231-488 A Manistee MI 2550 123.NET, INC. 348      
231-520 A Charlevoix MI 2550 123.NET, INC. 348      
231-522 A Luther MI 2550 123.NET, INC. 348      
231-536 6 East Jordan MI 2550 123.NET, INC. 348   2012-05-28   
231-538 A Fremont MI 2550 123.NET, INC. 348      
231-538 0 Fremont MI 2550 123.NET, INC. 348      
231-568 A Traverse City MI 2550 123.NET, INC. 348      
231-583 A Ludington MI 2550 123.NET, INC. 348      
231-583 0 Ludington MI 2550 123.NET, INC. 348      
231-583 1 Ludington MI 2550 123.NET, INC. 348      
231-614 A Pentwater MI 2550 123.NET, INC. 348      
231-635 A Mackinaw City MI 2550 123.NET, INC. 348      
231-636 A Howard City MI 2550 123.NET, INC. 348      
231-636 0 Howard City MI 2550 123.NET, INC. 348      
231-639 A Beulah MI 2550 123.NET, INC. 348      
231-643 A Morley MI 2550 123.NET, INC. 348      
231-643 0 Morley MI 2550 123.NET, INC. 348      
231-656 A Kalkaska MI 2550 123.NET, INC. 348      
231-660 A Big Rapids MI 2550 123.NET, INC. 348      
231-660 0 Big Rapids MI 2550 123.NET, INC. 348      
231-686 A Frankfort MI 2550 123.NET, INC. 348      
231-721 A Hart MI 2550 123.NET, INC. 348      
231-721 0 Hart MI 2550 123.NET, INC. 348      
231-731 A Shelby MI 2550 123.NET, INC. 348      
231-776 A Petoskey MI 2550 123.NET, INC. 348      
231-778 A Traverse City MI 2550 123.NET, INC. 348      
231-782 A Cheboygan MI 2550 123.NET, INC. 348      
231-791 7 Reed City MI 2550 123.NET, INC. 348   2009-02-27   
231-792 A Mancelona MI 2550 123.NET, INC. 348      
231-806 A Coral MI 2550 123.NET, INC. 348      
231-808 A Central Lake MI 2550 123.NET, INC. 348      
231-813 A Ludington MI 2550 123.NET, INC. 348      
231-836 A Evart MI 2550 123.NET, INC. 348      
231-842 A Cadillac MI 2550 123.NET, INC. 348      
231-874 A Wolverine MI 2550 123.NET, INC. 348      
231-877 A Northport MI 2550 123.NET, INC. 348      
231-899 A Northport MI 2550 123.NET, INC. 348      
231-908 A McBain MI 2550 123.NET, INC. 348      
231-925 A Scottville MI 2550 123.NET, INC. 348      
231-925 0 Scottville MI 2550 123.NET, INC. 348      
231-925 1 Scottville MI 2550 123.NET, INC. 348      

1 2 3 >>

Last updated: Fri, 22 Mar 2024 03:02:44 UTC

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.