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: LNNGMIVE2MD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
517-213 A Charlotte MI 6120 LEVEL 3 COMMUNICATIONS, LLC - MI 346      
517-219 A Fowlerville MI 6120 LEVEL 3 COMMUNICATIONS, LLC - MI 346      
517-224 A Potterville MI 6120 LEVEL 3 COMMUNICATIONS, LLC - MI 346      
517-305 A Clarklake MI 6120 LEVEL 3 COMMUNICATIONS, LLC - MI 346      
517-441 A Eaton Rapids MI 6120 LEVEL 3 COMMUNICATIONS, LLC - MI 346      
517-459 A Parma MI 6120 LEVEL 3 COMMUNICATIONS, LLC - MI 346      
517-507 A Lansing MI 6120 LEVEL 3 COMMUNICATIONS, LLC - MI 346      
517-580 A Lansing MI 6120 LEVEL 3 COMMUNICATIONS, LLC - MI 346      
517-731 A Grand Ledge MI 6120 LEVEL 3 COMMUNICATIONS, LLC - MI 346      
517-743 A Portland MI 6120 LEVEL 3 COMMUNICATIONS, LLC - MI 346      
517-803 A Lansing MI 6120 LEVEL 3 COMMUNICATIONS, LLC - MI 346      
517-826 A Jonesville MI 6120 LEVEL 3 COMMUNICATIONS, LLC - MI 346      
517-833 A Mason MI 6120 LEVEL 3 COMMUNICATIONS, LLC - MI 346      
517-853 A Lansing MI 6120 LEVEL 3 COMMUNICATIONS, LLC - MI 346      
517-868 A Dimondale MI 6120 LEVEL 3 COMMUNICATIONS, LLC - MI 346      
517-878 A Leslie MI 6120 LEVEL 3 COMMUNICATIONS, LLC - MI 346      
517-879 A Jackson MI 6120 LEVEL 3 COMMUNICATIONS, LLC - MI 346      
517-908 A Lansing MI 6120 LEVEL 3 COMMUNICATIONS, LLC - MI 346      
517-910 A Onondaga MI 6120 LEVEL 3 COMMUNICATIONS, LLC - MI 346      

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

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