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.
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OCN: 9748 AMERICAN MESSAGING SERVICES, LLC

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NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
989-384 A Saginaw MI SGNWMIFAXDX  344      
989-396 A Clare MI SGNWMIFAXDX  344      
989-405 A Freeland MI SGNWMIFAXDX  344      
989-434 A Bad Axe MI SGNWMIFAXDX  344      
989-440 A Clare MI SGNWMIFAXDX  344      
989-477 A West Branch MI SGNWMIFAXDX  344      
989-478 A Grayling MI SGNWMIFAXDX  344      
989-489 A Oscoda MI SGNWMIFAXDX  344      
989-490 A Gaylord MI SGNWMIFAXDX  344      
989-518 A Higgins Lake MI SGNWMIFAXDX  344      
989-603 A Alpena MI SGNWMIFAXDX  344      
989-604 A Houghton Lake MI SGNWMIFAXDX  344      
989-610 A Saginaw MI SGNWMIFAXDX  344      
989-612 A Mount Pleasant MI SGNWMIFAXDX  344      
989-716 A Freeland MI SGNWMIFAXDX  344      
989-722 A Bad Axe MI SGNWMIFAXDX  344      
989-730 A Saginaw MI SGNWMIFAXDX  344      
989-744 A Owosso MI SGNWMIFAXDX  344      
989-920 A Saginaw MI SGNWMIFAXDX  344      
989-924 A Alma MI SGNWMIFAXDX  344      
989-926 A Midland MI SGNWMIFAXDX  344      
989-929 A Bay City MI SGNWMIFAXDX  344      
989-979 A St Johns MI SGNWMIFAXDX  344      

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Last updated: Sat, 11 Jul 2020 20:37:26 UTC

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