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: GFTPMIEF2MD

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
616-951 7 Rockford MI 792K CHARTER IP ENABLED SERVICES, LLC 348   2013-08-26   
616-952 0 Kent City MI 792K CHARTER IP ENABLED SERVICES, LLC 348   2007-02-26   
616-986 1 Allendale MI 792K CHARTER IP ENABLED SERVICES, LLC 348   2015-12-31   

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Last updated: Thu, 16 Jul 2026 02:21:55 UTC

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