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: 565

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
517-565 A Fitchburg MI FTBGMIXIRSA  0681 FRONTIER MIDSTATES, INC. - MI 346      
517-565 0 Fitchburg MI LNNGMIVE2MD  6120 LEVEL 3 COMMUNICATIONS, LLC - MI 346   2006-01-05   
517-565 2 Fitchburg MI LNNGMIMN00Z  624H ONVOY SPECTRUM, LLC 346   2021-06-17   
517-565 3 Fitchburg MI FTBGMIXIRSA  0681 FRONTIER MIDSTATES, INC. - MI 346      
517-565 4 Fitchburg MI LNNGMIVE2MD  6120 LEVEL 3 COMMUNICATIONS, LLC - MI 346   2004-07-16   
517-565 6 Fitchburg MI LNNGMIMNX5Z  543C ONVOY, LLCV - MI 346   2021-04-25   
517-565 7 Fitchburg MI LNNGMIMNX5Z  543C ONVOY, LLCV - MI 346   2013-04-01   

Last updated: Sat, 05 Apr 2025 03:03:23 UTC

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