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.

NPA: 906 [Rate centres in NPA 906] [Dial plan for NPA 906]

NXX: 332

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
906-332 A Manistique MI HNCCMIMN3MD  543C ONVOY, LLCV - MI 342      
906-332 2 Manistique MI   543C ONVOY, LLCV - MI 342   2021-08-15   
906-332 3 Manistique MI   543C ONVOY, LLCV - MI 342   2021-08-15   

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.