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: 234

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
475-234 A New Haven CT HRFRCT03HMD  073H TELNYX LLC 920      
475-234 0 New Haven CT   639C ONVOY, LLC - CT 920   2017-06-09   
475-234 1 New Haven CT   073H TELNYX LLC 920   2017-01-26   
475-234 2 New Haven CT   639C ONVOY, LLC - CT 920   2017-09-22   
475-234 3 New Haven CT   639C ONVOY, LLC - CT 920   2017-09-22   
475-234 4 New Haven CT   639C ONVOY, LLC - CT 920   2017-09-22   
475-234 5 New Haven CT   318J COMCAST IP PHONE, LLC 920   2017-12-10   
475-234 6 New Haven CT   318J COMCAST IP PHONE, LLC 920   2018-05-30   
475-234 7 New Haven CT   5562 METROPCS, INC. 920   2018-09-02   
475-234 8 New Haven CT   6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920   2017-08-06   
475-234 9 New Haven CT   6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920   2018-07-23   

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

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