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: 398

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
475-398 A Huntington CT   639C ONVOY, LLC - CT 920   2026-02-02   
475-398 0 Huntington CT   639C ONVOY, LLC - CT 920   2026-02-02   
475-398 5 Huntington CT   490J BOOST SUBSCRIBERCO L.L.C. 920   2026-09-24   
475-398 6 Huntington CT   490J BOOST SUBSCRIBERCO L.L.C. 920   2026-06-11   
475-398 8 Huntington CT   199F BANDWIDTH.COM CLEC, LLC - CT 920   2026-06-06   

Last updated: Sun, 17 May 2026 03:26:51 UTC

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