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: 333

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
475-333 A Stamford CT HRFRCT03HMD  073H TELNYX LLC 920      
475-333 0 Stamford CT   639C ONVOY, LLC - CT 920   2017-06-09   
475-333 1 Stamford CT   6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920   2018-08-31   
475-333 2 Stamford CT   6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920   2017-08-18   
475-333 3 Stamford CT   073H TELNYX LLC 920   2017-04-20   
475-333 4 Stamford CT   6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920   2017-11-27   
475-333 5 Stamford CT   6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920   2017-11-27   
475-333 6 Stamford CT   6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920   2017-12-12   
475-333 7 Stamford CT   6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920   2017-12-12   
475-333 8 Stamford CT   6388 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 920   2017-12-12   
475-333 9 Stamford CT   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 920   2017-10-21   

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

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