Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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OCN: 639C ONVOY, LLC - CT

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NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
475-384 0 New Haven CT   920   2025-01-12   
475-384 7 New Haven CT   920   2026-01-05   
475-384 8 New Haven CT   920   2025-11-07   
475-384 9 New Haven CT   920   2026-01-05   
475-386 0 Trumbull CT   920   2025-03-25   
475-388 1 Stamford CT   920   2025-05-10   
475-388 2 Stamford CT   920   2025-10-12   
475-388 8 Stamford CT   920   2025-09-06   
475-389 0 Waterbury CT   920   2025-05-10   
475-391 A Bridgeport CT   920   2025-05-30   
475-391 0 Bridgeport CT   920   2025-05-30   
475-392 A New Haven CT   920   2025-06-07   
475-392 0 New Haven CT   920   2025-06-07   
475-398 A Huntington CT   920   2026-02-02   
475-398 0 Huntington CT   920   2026-02-02   
475-400 A Stamford CT HRFRCTBCDS1  920      
475-400 0 Stamford CT   920   2018-01-22   
475-400 9 Stamford CT   920   2020-03-02   
475-405 A Cheshire CT HRFRCTBCDS1  920      
475-405 1 Cheshire CT   920   2020-07-26   
475-405 2 Cheshire CT   920   2020-07-26   
475-405 3 Cheshire CT   920   2020-07-26   
475-405 4 Cheshire CT   920   2021-03-04   
475-405 5 Cheshire CT   920   2021-03-04   
475-410 2 Woodbury CT   920   2023-08-18   
475-410 5 Woodbury CT   920   2021-04-17   
475-410 6 Woodbury CT   920   2021-04-17   
475-410 8 Woodbury CT   920   2023-08-18   
475-426 1 Ridgefield CT   920   2023-08-18   
475-426 2 Ridgefield CT   920   2023-08-18   
475-426 4 Ridgefield CT   920   2023-08-18   
475-426 9 Ridgefield CT   920   2023-08-18   
475-444 8 Newtown CT   920   2015-05-09   
475-445 A Newtown CT HRFRCTBCDS1  920      
475-445 1 Newtown CT   920   2020-08-10   
475-445 2 Newtown CT   920   2020-08-10   
475-445 3 Newtown CT   920   2021-03-04   
475-445 4 Newtown CT   920   2020-11-22   
475-445 5 Newtown CT   920   2020-11-22   
475-445 6 Newtown CT   920   2021-03-04   
475-447 0 Byram CT   132   2024-01-07   
475-447 1 Byram CT   132   2024-03-07   
475-447 4 Byram CT   132   2021-06-03   
475-447 5 Byram CT   132   2021-06-03   
475-447 8 Byram CT   132   2021-05-22   
475-447 9 Byram CT   132   2021-05-22   
475-450 0 Bridgeport CT   920   2023-07-22   
475-450 7 Bridgeport CT   920   2023-06-26   
475-450 8 Bridgeport CT   920   2023-05-14   
475-450 9 Bridgeport CT   920   2023-06-26   

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

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