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: 381

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
475-381 A Wallingford CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2024-12-05   
475-381 0 Wallingford CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2024-12-05   
475-381 1 Wallingford CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2024-12-15   
475-381 2 Wallingford CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2026-01-12   
475-381 3 Wallingford CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2026-06-22   
475-381 4 Wallingford CT   639C ONVOY, LLC - CT 920   2026-09-28   
475-381 5 Wallingford CT   639C ONVOY, LLC - CT 920   2026-09-28   
475-381 6 Wallingford CT   199F BANDWIDTH.COM CLEC, LLC - CT 920   2026-11-07   
475-381 7 Wallingford CT   199F BANDWIDTH.COM CLEC, LLC - CT 920   2026-10-02   
475-381 8 Wallingford CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2025-05-10   
475-381 9 Wallingford CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2025-10-26   

Last updated: Sun, 01 Nov 2026 02:11:49 UTC

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