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: 390

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
475-390 A New Haven CT   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 920   2025-05-23   
475-390 0 New Haven CT   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 920   2025-05-23   
475-390 1 New Haven CT   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 920   2025-05-23   
475-390 2 New Haven CT   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 920   2025-05-23   
475-390 3 New Haven CT   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 920   2025-05-23   
475-390 4 New Haven CT   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 920   2025-05-23   
475-390 5 New Haven CT   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 920   2025-05-23   
475-390 6 New Haven CT   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 920   2025-05-23   
475-390 7 New Haven CT   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 920   2025-05-23   
475-390 8 New Haven CT   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 920   2025-05-23   
475-390 9 New Haven CT   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 920   2025-05-23   

Last updated: Sun, 01 Jun 2025 02:18:11 UTC

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