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: 277

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
475-277 A Wilton CT NWLNCTCS6MD  508J CENTURYLINK COMMUNICATIONS, LLC 920      
475-277 0 Wilton CT   199F BANDWIDTH.COM CLEC, LLC - CT 920   2015-06-27   
475-277 1 Wilton CT   539F PEERLESS NETWORK OF CONNECTICUT, LLC - CT 920   2017-07-22   
475-277 2 Wilton CT   199F BANDWIDTH.COM CLEC, LLC - CT 920   2019-06-10   
475-277 3 Wilton CT   624H ONVOY SPECTRUM, LLC 920   2022-02-03   
475-277 4 Wilton CT   639C ONVOY, LLC - CT 920   2015-05-15   
475-277 5 Wilton CT   197D VONAGE AMERICA LLC 920   2021-06-11   
475-277 6 Wilton CT   199F BANDWIDTH.COM CLEC, LLC - CT 920   2019-07-19   
475-277 7 Wilton CT   508J CENTURYLINK COMMUNICATIONS, LLC 920   2014-08-15   
475-277 8 Wilton CT   073H TELNYX LLC 920   2018-05-02   
475-277 9 Wilton CT   145J TERRA NOVA TELECOM INC. 920   2022-10-07   

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

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