Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 937 [Rate centres in NPA 937] [Dial plan for NPA 937]

NXX: 440

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
937-440 A Troy OH TROYOHXADS0  0615 FRONTIER NORTH, INC. - OH 328      

Last updated: Sun, 07 Dec 2025 22:02:11 UTC

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