Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
475-288 2 Norwalk CT 4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2014-11-24   
475-288 3 Norwalk CT 4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2014-11-24   
475-288 4 Norwalk CT 4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2014-11-24   
475-288 5 Norwalk CT 4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2014-11-24   
475-357 4 Milford CT 4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2025-01-23   
475-365 6 New Haven CT 4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2024-05-31   
475-369 5 Huntington CT 4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2024-11-04   
475-384 5 New Haven CT 4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2025-01-31   
475-400 8 Stamford CT 4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2020-02-10   
475-444 5 Newtown CT 4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2014-11-21   
475-473 4 Woodbury CT 4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2019-10-12   
475-477 1 Stamford CT 4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2020-01-17   
475-529 2 Danbury CT 4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2012-08-15   
475-685 3 Stamford CT 4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2019-07-01   
860-200 6 Hartford CT 4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2016-05-20   
860-213 8 Norwich CT 4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2008-03-13   
860-218 9 Hartford CT 4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2004-11-08   
860-237 A Norwich CT 4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920      
860-237 3 Norwich CT 4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2005-01-14   
860-237 4 Norwich CT 4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920      
860-237 5 Norwich CT 4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2005-02-07   
860-237 6 Norwich CT 4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2014-03-16   
860-237 8 Norwich CT 4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2005-01-09   
860-245 2 Mystic CT 4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2009-06-17   
860-248 A Cornwall CT 4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920      
860-248 2 Cornwall CT 4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2005-10-28   
860-248 4 Cornwall CT 4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920      
860-248 8 Cornwall CT 4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2005-09-22   
860-254 4 Windsor Locks CT 4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2003-08-12   
860-254 6 Windsor Locks CT 4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2005-02-07   
860-254 7 Windsor Locks CT 4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2005-02-04   
860-256 4 Hartford CT 4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2002-10-14   
860-256 8 Hartford CT 4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2002-07-16   
860-263 0 Hartford CT 4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2007-12-03   
860-264 1 Simsbury CT 4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2005-01-18   
860-264 4 Simsbury CT 4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2003-08-12   
860-265 1 Enfield CT 4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2005-02-19   
860-265 4 Enfield CT 4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2003-08-12   
860-266 1 Glastonbury CT 4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2006-06-12   
860-266 2 Glastonbury CT 4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2005-01-12   
860-266 4 Glastonbury CT 4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2003-08-12   
860-269 0 Farmington CT 4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2006-01-28   
860-269 3 Farmington CT 4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2005-02-19   
860-269 4 Farmington CT 4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2003-08-12   
860-269 6 Farmington CT 4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2006-01-28   
860-269 7 Farmington CT 4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2005-09-22   
860-269 8 Farmington CT 4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2002-11-17   
860-269 9 Farmington CT 4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2012-03-18   
860-270 0 Hartford CT 4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2006-07-20   
860-271 8 New London CT 4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2002-11-17   

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Last updated: Thu, 16 Jul 2026 02:21:55 UTC

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