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: 383

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
475-383 A Greenwich CT NYCMNYBXDSL  639C ONVOY, LLC - CT 132   2025-01-12   
475-383 0 Greenwich CT NYCMNYBXDSL  639C ONVOY, LLC - CT 132   2025-01-12   
475-383 1 Greenwich CT NYCMNYBXDSL  639C ONVOY, LLC - CT 132   2025-04-06   
475-383 2 Greenwich CT   639C ONVOY, LLC - CT 132   2026-10-04   
475-383 3 Greenwich CT   639C ONVOY, LLC - CT 132   2026-10-04   
475-383 4 Greenwich CT NYCMNYAACML  6622 OMNIPOINT COMMUNICATIONS, INC. - NY 132   2025-05-30   
475-383 5 Greenwich CT NYCMNYAACML  6622 OMNIPOINT COMMUNICATIONS, INC. - NY 132   2025-10-10   
475-383 7 Greenwich CT WHPLNYWPXOY  199F BANDWIDTH.COM CLEC, LLC - CT 132   2026-06-06   
475-383 8 Greenwich CT NYCMNY13XNX  732J NUSO, LLC 132   2025-01-13   
475-383 9 Greenwich CT NYCMNY13XNX  732J NUSO, LLC 132   2025-01-13   

Last updated: Tue, 29 Sep 2026 03:00:13 UTC

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