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: LNNGMIDC0MD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
517-297 0 Hillsdale MI 939H COMMIO, LLC 346   2022-11-27   
517-302 5 Fowlerville MI 939H COMMIO, LLC 346   2022-11-19   
517-344 1 Jackson MI 939H COMMIO, LLC 346   2022-09-26   
517-378 4 Potterville MI 939H COMMIO, LLC 346   2022-12-03   
517-399 0 Eaton Rapids MI 939H COMMIO, LLC 346   2022-11-27   
517-550 1 Dimondale MI 939H COMMIO, LLC 346   2022-12-03   
517-686 0 Albion MI 939H COMMIO, LLC 346   2022-11-27   
517-732 9 Portland MI 939H COMMIO, LLC 346   2022-12-03   
517-758 0 Holt MI 939H COMMIO, LLC 346   2022-02-24   
517-770 A Lansing MI 939H COMMIO, LLC 346      
517-770 0 Lansing MI 939H COMMIO, LLC 346   2021-06-05   
517-786 9 Charlotte MI 939H COMMIO, LLC 346   2022-09-26   
517-928 9 Mason MI 939H COMMIO, LLC 346   2022-11-05   

Last updated: Tue, 30 May 2023 01:08:39 UTC

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