Local Calling Guide

Area code/prefix search

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NPA: 475 [Rate centres in NPA 475] [Dial plan for NPA 475]

NXX: 374

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
475-374 A Ansonia-Derby CT BLFDCTAP2MD  6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920   2024-10-27   
475-374 0 Ansonia-Derby CT   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 920   2025-02-19   
475-374 1 Ansonia-Derby CT   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 920   2025-02-19   
475-374 2 Ansonia-Derby CT   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 920   2025-02-19   
475-374 3 Ansonia-Derby CT   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 920   2025-02-19   
475-374 4 Ansonia-Derby CT   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 920   2025-02-19   
475-374 5 Ansonia-Derby CT   6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920   2025-08-14   
475-374 6 Ansonia-Derby CT   6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920   2025-06-18   
475-374 7 Ansonia-Derby CT BLFDCTAP2MD  6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920   2024-10-27   
475-374 8 Ansonia-Derby CT BLFDCTAP2MD  6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920   2025-06-09   
475-374 9 Ansonia-Derby CT BLFDCTAP2MD  6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920   2024-10-27   

Last updated: Fri, 25 Jul 2025 03:21:23 UTC

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