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: 977

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
475-977 A Stamford CT HRFRCT03XOX  965H FRACTEL, LLC 920      
475-977 0 Stamford CT   539F PEERLESS NETWORK OF CONNECTICUT, LLC - CT 920   2020-09-18   
475-977 1 Stamford CT   6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920   2021-06-06   
475-977 2 Stamford CT   197D VONAGE AMERICA LLC 920   2021-06-11   
475-977 3 Stamford CT   639C ONVOY, LLC - CT 920   2021-08-08   
475-977 4 Stamford CT   6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920   2024-08-13   
475-977 5 Stamford CT   639C ONVOY, LLC - CT 920   2020-11-22   
475-977 6 Stamford CT   639C ONVOY, LLC - CT 920   2020-11-22   
475-977 7 Stamford CT   965H FRACTEL, LLC 920   2020-09-17   
475-977 8 Stamford CT   639C ONVOY, LLC - CT 920   2020-11-22   
475-977 9 Stamford CT   639C ONVOY, LLC - CT 920   2020-11-22   

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

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