Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 475 [Rate centres in NPA 475] [Dial plan for NPA 475]

NXX: 397

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
475-397 A Norwalk CT   4950 CABLEVISION LIGHTPATH, INC. - CT 920   2025-12-11   
475-397 0 Norwalk CT   4950 CABLEVISION LIGHTPATH, INC. - CT 920   2025-12-11   

Last updated: Tue, 31 Mar 2026 13:56:49 UTC

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