Local Calling Guide

Area code/prefix search

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

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
517-567 A Ransom MI 4417 FRONTIER COMMUNICATIONS OF MICHIGAN, INC. 346      

Last updated: Thu, 20 Nov 2025 13:34:34 UTC

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