Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
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Switch: HRFRCT03XMX

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
475-353 5 Fairfield CT 145J TERRA NOVA TELECOM INC. 920   2026-03-29   
475-399 9 Stamford CT 145J TERRA NOVA TELECOM INC. 920   2026-03-15   
475-410 9 Woodbury CT 145J TERRA NOVA TELECOM INC. 920   2026-02-06   
475-476 0 Bridgeport CT 145J TERRA NOVA TELECOM INC. 920   2026-02-06   
475-489 2 Norwalk CT 145J TERRA NOVA TELECOM INC. 920   2026-02-05   
860-219 3 Windsor CT 145J TERRA NOVA TELECOM INC. 920   2026-06-05   
860-323 6 Simsbury CT 145J TERRA NOVA TELECOM INC. 920   2026-03-29   
860-385 9 Southington CT 145J TERRA NOVA TELECOM INC. 920   2026-05-01   
860-598 6 Lyme CT 145J TERRA NOVA TELECOM INC. 920   2026-02-06   
860-600 1 Litchfield CT 145J TERRA NOVA TELECOM INC. 920   2026-02-06   
860-630 3 Putnam CT 145J TERRA NOVA TELECOM INC. 920   2026-06-05   
860-800 8 Norwich CT 145J TERRA NOVA TELECOM INC. 920   2026-03-29   
860-901 9 Windsor Locks CT 145J TERRA NOVA TELECOM INC. 920   2025-04-08   
959-900 A Hartford CT 145J TERRA NOVA TELECOM INC. 920      

Last updated: Sat, 01 Aug 2026 03:19:33 UTC

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