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:

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   6120 LEVEL 3 COMMUNICATIONS, LLC - MI 346   2006-01-05   
517-565 3 Fitchburg MI   0681 FRONTIER MIDSTATES, INC. - MI 346      
517-565 4 Fitchburg MI   6120 LEVEL 3 COMMUNICATIONS, LLC - MI 346   2004-07-16   
517-565 7 Fitchburg MI   543C ONVOY, LLC - MI 346   2013-04-01   

Last updated: Tue, 31 Dec 2019 02:37:20 UTC

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