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: 278

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
475-278 A Greenwich CT GNWCCTGN8MD  4950 CABLEVISION LIGHTPATH, INC. - CT 132      
475-278 0 Greenwich CT   639C ONVOY, LLC - CT 132   2021-07-19   
475-278 1 Greenwich CT   639C ONVOY, LLC - CT 132   2021-07-19   
475-278 2 Greenwich CT   639C ONVOY, LLC - CT 132   2021-07-19   
475-278 3 Greenwich CT   4950 CABLEVISION LIGHTPATH, INC. - CT 132   2021-04-21   
475-278 4 Greenwich CT   516J TON80 COMMUNICATIONS, LLC 132   2021-06-28   
475-278 5 Greenwich CT   639C ONVOY, LLC - CT 132   2021-07-19   
475-278 6 Greenwich CT   639C ONVOY, LLC - CT 132   2021-04-26   
475-278 7 Greenwich CT   639C ONVOY, LLC - CT 132   2021-04-26   
475-278 8 Greenwich CT   639C ONVOY, LLC - CT 132   2021-04-26   
475-278 9 Greenwich CT   639C ONVOY, LLC - CT 132   2021-04-26   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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