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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Switch: HNCCMIMNRPA

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
906-482 A Houghton MI 9323 MICHIGAN BELL TEL CO 342      
906-483 A Houghton MI 9323 MICHIGAN BELL TEL CO 342      
906-483 0 Houghton MI 9323 MICHIGAN BELL TEL CO 342      
906-483 1 Houghton MI 9323 MICHIGAN BELL TEL CO 342      
906-483 2 Houghton MI 9323 MICHIGAN BELL TEL CO 342      
906-483 3 Houghton MI 9323 MICHIGAN BELL TEL CO 342      
906-483 4 Houghton MI 9323 MICHIGAN BELL TEL CO 342      
906-483 5 Houghton MI 9323 MICHIGAN BELL TEL CO 342      
906-483 6 Houghton MI 9323 MICHIGAN BELL TEL CO 342      
906-483 7 Houghton MI 9323 MICHIGAN BELL TEL CO 342      
906-483 8 Houghton MI 9323 MICHIGAN BELL TEL CO 342      
906-487 A Houghton MI 9323 MICHIGAN BELL TEL CO 342      

Last updated: Thu, 20 Nov 2025 13:34:34 UTC

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