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: SGNWMIATX0X

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
989-214 5 Ubly MI 516C AT&T CORP. 344   2011-09-30   
989-266 7 Auburn MI 516C AT&T CORP. 344   2011-09-30   
989-282 5 Fairgrove MI 516C AT&T CORP. 344   2011-09-30   
989-310 5 East Tawas MI 516C AT&T CORP. 344   2011-09-30   
989-314 4 Standish MI 516C AT&T CORP. 344   2011-09-30   
989-327 A Saginaw MI 516C AT&T CORP. 344      
989-327 1 Saginaw MI 516C AT&T CORP. 344   2005-05-21   
989-349 5 Birch Run MI 516C AT&T CORP. 344   2011-09-30   
989-359 5 Gladwin MI 516C AT&T CORP. 344   2011-09-30   
989-373 5 Owendale MI 516C AT&T CORP. 344   2011-09-30   
989-380 7 Bay Port MI 516C AT&T CORP. 344   2023-09-25   
989-389 6 St Helen MI 516C AT&T CORP. 344   2013-02-22   
989-391 4 Bay City MI 516C AT&T CORP. 344   2007-03-20   
989-394 8 Beaverton MI 516C AT&T CORP. 344   2013-02-22   
989-418 5 Clare MI 516C AT&T CORP. 344   2011-09-30   
989-433 1 Rosebush MI 516C AT&T CORP. 344   2013-02-22   
989-442 8 Coleman MI 516C AT&T CORP. 344   2011-09-30   
989-447 5 St Charles MI 516C AT&T CORP. 344   2011-09-30   
989-455 5 Vassar MI 516C AT&T CORP. 344   2012-12-03   
989-502 5 Frankenmuth MI 516C AT&T CORP. 344   2011-09-30   
989-523 7 Bad Axe MI 516C AT&T CORP. 344   2023-10-05   
989-544 6 Farwell MI 516C AT&T CORP. 344   2013-02-22   
989-564 A Linwood MI 516C AT&T CORP. 344      
989-564 7 Linwood MI 516C AT&T CORP. 344   2011-02-03   
989-569 9 Oscoda MI 516C AT&T CORP. 344   2011-09-30   
989-575 A Akron MI 516C AT&T CORP. 344      
989-575 7 Akron MI 516C AT&T CORP. 344   2010-02-04   
989-625 5 Freeland MI 516C AT&T CORP. 344   2011-09-30   
989-630 9 Harrison MI 516C AT&T CORP. 344   2011-09-30   
989-660 3 Mayville MI 516C AT&T CORP. 344   2011-09-30   
989-674 5 Unionville MI 516C AT&T CORP. 344   2011-09-30   
989-704 5 Sebewaing MI 516C AT&T CORP. 344   2011-09-30   
989-726 5 West Branch MI 516C AT&T CORP. 344   2014-03-07   
989-750 A Midland MI 516C AT&T CORP. 344      
989-750 7 Midland MI 516C AT&T CORP. 344   2006-06-30   
989-776 3 Saginaw MI 516C AT&T CORP. 344   2016-08-19   
989-850 5 Gagetown MI 516C AT&T CORP. 344   2012-01-27   
989-868 5 Reese MI 516C AT&T CORP. 344   2011-09-30   

Last updated: Wed, 18 Jun 2025 02:30:00 UTC

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