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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Lake Orion, MI

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NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
947-622 6 SFLDMITODS2  543C ONVOY, LLCV - MI 340   2020-09-18   
947-622 7 LIVNMIUX8MD  5562 METROPCS, INC. 340   2020-06-26   
947-622 8 SFLDMITODS2  543C ONVOY, LLCV - MI 340   2021-03-27   
947-622 9 SFLDMITODS2  543C ONVOY, LLCV - MI 340   2021-03-27   

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Last updated: Sun, 26 Jan 2025 15:59:20 UTC

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