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: GDRPMIBLXTZ

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
231-262 A Elmira MI 3535 ACD TELECOM, INC. - MI 348      
231-399 A Frankfort MI 3535 ACD TELECOM, INC. - MI 348      
231-424 A Carr MI 3535 ACD TELECOM, INC. - MI 348      
231-457 A Muskegon MI 3535 ACD TELECOM, INC. - MI 348      
231-515 A Evart MI 3535 ACD TELECOM, INC. - MI 348      
231-678 A Brethren MI 3535 ACD TELECOM, INC. - MI 348      
231-774 A Interlochen MI 3535 ACD TELECOM, INC. - MI 348      
231-805 A Kaleva MI 3535 ACD TELECOM, INC. - MI 348      
231-930 A Beulah MI 3535 ACD TELECOM, INC. - MI 348      
231-994 A Lake Leelanau MI 3535 ACD TELECOM, INC. - MI 348      
269-475 A Vicksburg MI 3535 ACD TELECOM, INC. - MI 348      
269-682 A Hopkins MI 3535 ACD TELECOM, INC. - MI 348      
269-742 A Athens MI 3535 ACD TELECOM, INC. - MI 348      
269-913 A Paw Paw MI 3535 ACD TELECOM, INC. - MI 348      
517-933 A Coldwater MI 3535 ACD TELECOM, INC. - MI 348      
616-384 A Coopersville MI 3535 ACD TELECOM, INC. - MI 348      
616-537 A Lake Odessa MI 3535 ACD TELECOM, INC. - MI 348      
616-773 A Grand Rapids MI 3535 ACD TELECOM, INC. - MI 348      
616-841 A Ionia MI 3535 ACD TELECOM, INC. - MI 348      

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

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