Local Calling Guide

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

NXX: 673

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
475-673 A Norwalk CT HRFRCT03XSX  516J TON80 COMMUNICATIONS, LLC 920      
475-673 0 Norwalk CT   639C ONVOY, LLC - CT 920   2024-01-07   
475-673 1 Norwalk CT   639C ONVOY, LLC - CT 920   2024-01-07   
475-673 2 Norwalk CT   516J TON80 COMMUNICATIONS, LLC 920   2022-03-12   
475-673 3 Norwalk CT   639C ONVOY, LLC - CT 920   2023-01-20   
475-673 4 Norwalk CT   639C ONVOY, LLC - CT 920   2023-01-20   
475-673 5 Norwalk CT   639C ONVOY, LLC - CT 920   2023-01-20   
475-673 6 Norwalk CT   624H ONVOY SPECTRUM, LLC 920   2022-03-13   
475-673 7 Norwalk CT   624H ONVOY SPECTRUM, LLC 920   2022-03-13   
475-673 8 Norwalk CT   639C ONVOY, LLC - CT 920   2024-07-15   
475-673 9 Norwalk CT   639C ONVOY, LLC - CT 920   2024-06-07   

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

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