Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 517 [Rate centres in NPA 517] [Dial plan for NPA 517]

NXX: 531

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
517-531 A Parma MI PARMMIXJDS0  0681 FRONTIER MIDSTATES, INC. - MI 346      
517-531 0 Parma MI LNNGMIMN02Z  318J COMCAST IP PHONE, LLC 346   2007-03-07   
517-531 1 Parma MI PARMMIXJDS0  0681 FRONTIER MIDSTATES, INC. - MI 346      
517-531 2 Parma MI LNNGMIMNX3Y  2550 123.NET, LLC 346   2003-03-09   
517-531 3 Parma MI PARMMIXJDS0  0681 FRONTIER MIDSTATES, INC. - MI 346      
517-531 4 Parma MI PARMMIXJDS0  0681 FRONTIER MIDSTATES, INC. - MI 346      
517-531 5 Parma MI PARMMIXJDS0  0681 FRONTIER MIDSTATES, INC. - MI 346      
517-531 6 Parma MI LNNGMIMNX5Z  543C ONVOY, LLCV - MI 346   2007-03-09   
517-531 7 Parma MI PARMMIXJDS0  0681 FRONTIER MIDSTATES, INC. - MI 346      
517-531 8 Parma MI PARMMIXJDS0  0681 FRONTIER MIDSTATES, INC. - MI 346      
517-531 9 Parma MI   145J TERRA NOVA TELECOM INC. 346   2025-05-31   

Last updated: Sun, 01 Jun 2025 02:18:11 UTC

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