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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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
203-390 A New Haven CT 7143 TELEPORT COMMUNICATIONS AMERICA, LLC - CT 920      
203-390 2 New Haven CT 7143 TELEPORT COMMUNICATIONS AMERICA, LLC - CT 920   2016-01-08   
203-390 3 New Haven CT 7143 TELEPORT COMMUNICATIONS AMERICA, LLC - CT 920   2016-01-08   
203-390 4 New Haven CT 7143 TELEPORT COMMUNICATIONS AMERICA, LLC - CT 920   2016-01-08   
203-390 6 New Haven CT 7143 TELEPORT COMMUNICATIONS AMERICA, LLC - CT 920   2017-01-03   
203-658 A Stamford CT 7143 TELEPORT COMMUNICATIONS AMERICA, LLC - CT 920      
203-658 0 Stamford CT 7143 TELEPORT COMMUNICATIONS AMERICA, LLC - CT 920      
203-658 1 Stamford CT 7143 TELEPORT COMMUNICATIONS AMERICA, LLC - CT 920      
203-658 9 Stamford CT 7143 TELEPORT COMMUNICATIONS AMERICA, LLC - CT 920      
203-666 3 Bridgeport CT 7143 TELEPORT COMMUNICATIONS AMERICA, LLC - CT 920   2013-11-29   
203-690 3 Bridgeport CT 7143 TELEPORT COMMUNICATIONS AMERICA, LLC - CT 920   2008-10-05   
203-701 5 Milford CT 7143 TELEPORT COMMUNICATIONS AMERICA, LLC - CT 920   2009-05-11   
203-703 6 Stamford CT 7143 TELEPORT COMMUNICATIONS AMERICA, LLC - CT 920   2007-05-14   
203-703 7 Stamford CT 7143 TELEPORT COMMUNICATIONS AMERICA, LLC - CT 920   2007-05-14   
203-793 8 Wallingford CT 7143 TELEPORT COMMUNICATIONS AMERICA, LLC - CT 920   2017-03-03   
203-833 5 New Haven CT 7143 TELEPORT COMMUNICATIONS AMERICA, LLC - CT 920   2015-09-28   
203-833 6 New Haven CT 7143 TELEPORT COMMUNICATIONS AMERICA, LLC - CT 920   2015-09-28   
203-833 7 New Haven CT 7143 TELEPORT COMMUNICATIONS AMERICA, LLC - CT 920   2015-09-28   
203-833 8 New Haven CT 7143 TELEPORT COMMUNICATIONS AMERICA, LLC - CT 920   2015-09-28   
475-210 2 Bridgeport CT 7143 TELEPORT COMMUNICATIONS AMERICA, LLC - CT 920   2016-09-01   
475-230 A New Haven CT 7143 TELEPORT COMMUNICATIONS AMERICA, LLC - CT 920      
475-292 1 Stamford CT 7143 TELEPORT COMMUNICATIONS AMERICA, LLC - CT 920   2015-12-21   
475-329 6 Danbury CT 7143 TELEPORT COMMUNICATIONS AMERICA, LLC - CT 920   2014-05-28   
475-619 A Stamford CT 7143 TELEPORT COMMUNICATIONS AMERICA, LLC - CT 920      
475-619 6 Stamford CT 7143 TELEPORT COMMUNICATIONS AMERICA, LLC - CT 920   2015-02-21   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

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