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: 363

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
475-363 A Westport CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2024-04-22   
475-363 0 Westport CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2024-04-22   
475-363 1 Westport CT   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 920   2025-02-19   
475-363 2 Westport CT HRFRCTCR3MD  318J COMCAST IP PHONE, LLC 920   2024-11-01   
475-363 4 Westport CT   199F BANDWIDTH.COM CLEC, LLC - CT 920   2025-05-12   
475-363 5 Westport CT   6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920   2025-05-30   
475-363 8 Westport CT   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 920   2025-02-19   
475-363 9 Westport CT HRFRCT0380Z  539F PEERLESS NETWORK OF CONNECTICUT, LLC - CT 920   2024-09-21   

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

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