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: THRRMIXTNMD

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
269-699 3 Edwardsburg MI 543C ONVOY, LLCV - MI 348   2021-07-12   
269-751 0 Hamilton MI 543C ONVOY, LLCV - MI 348   2021-07-12   
269-752 1 Dowagiac MI 543C ONVOY, LLCV - MI 348   2023-08-12   
269-752 2 Dowagiac MI 543C ONVOY, LLCV - MI 348   2023-07-09   
517-756 5 Union City MI 543C ONVOY, LLCV - MI 348   2021-07-12   
517-774 3 Coldwater Lake MI 543C ONVOY, LLCV - MI 348   2021-07-12   
517-858 8 Bronson MI 543C ONVOY, LLCV - MI 348   2021-07-12   

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Last updated: Thu, 05 Feb 2026 23:41:55 UTC

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