Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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Switch: PARMMIXJDS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
517-531 A Parma MI 0681 FRONTIER MIDSTATES, INC. - MI 346      
517-531 1 Parma MI 0681 FRONTIER MIDSTATES, INC. - MI 346      
517-531 3 Parma MI 0681 FRONTIER MIDSTATES, INC. - MI 346      
517-531 4 Parma MI 0681 FRONTIER MIDSTATES, INC. - MI 346      
517-531 5 Parma MI 0681 FRONTIER MIDSTATES, INC. - MI 346      
517-531 7 Parma MI 0681 FRONTIER MIDSTATES, INC. - MI 346      
517-531 8 Parma MI 0681 FRONTIER MIDSTATES, INC. - MI 346      

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

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