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
203-889 9 New Haven CT 4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920      
203-901 1 New Haven CT 4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2007-11-02   
203-903 A New Haven CT 4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920      
203-903 0 New Haven CT 4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920      
203-903 9 New Haven CT 4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2009-04-27   
203-904 2 Norwalk CT 4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2012-11-15   
203-909 6 New Haven CT 4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2008-07-25   
203-916 A Bridgeport CT 4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920      
203-916 0 Bridgeport CT 4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2010-03-28   
203-916 1 Bridgeport CT 4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920      
203-916 4 Bridgeport CT 4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2010-11-25   
203-916 5 Bridgeport CT 4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2010-07-23   
203-916 6 Bridgeport CT 4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2011-01-31   
203-920 4 New Canaan CT 4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2004-04-13   
203-935 A Meriden CT 4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2025-04-26   
203-935 2 Meriden CT 4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920      
203-936 6 New Haven CT 4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2010-07-02   
203-941 2 Seymour CT 4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2012-03-03   
203-951 0 Milford CT 4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2007-04-19   
203-951 3 Milford CT 4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2005-08-05   
203-951 5 Milford CT 4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2010-11-18   
203-951 6 Milford CT 4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2004-12-12   
203-951 8 Milford CT 4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2012-06-23   
203-953 0 Bridgeport CT 4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2005-11-03   
203-989 A Stamford CT 4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920      
203-989 0 Stamford CT 4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920      
203-989 2 Stamford CT 4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2011-02-26   
203-989 3 Stamford CT 4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2012-07-29   
203-989 4 Stamford CT 4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2012-02-17   
203-993 8 Bridgeport CT 4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2007-05-04   
203-998 A Stamford CT 4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920      
203-998 0 Stamford CT 4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2007-05-01   
475-208 A Norwalk CT 4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920      
475-208 2 Norwalk CT 4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2015-01-29   
475-209 5 New Haven CT 4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2014-10-18   
475-209 8 New Haven CT 4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2015-08-17   
475-216 2 Ansonia-Derby CT 4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2019-08-12   
475-216 3 Ansonia-Derby CT 4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2019-10-27   
475-232 A Stamford CT 4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920      
475-232 2 Stamford CT 4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2016-09-15   
475-235 6 Waterbury CT 4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2012-12-01   
475-262 2 Huntington CT 4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2020-05-18   
475-262 3 Huntington CT 4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2020-05-18   
475-262 4 Huntington CT 4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2020-04-10   
475-262 5 Huntington CT 4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2020-08-15   
475-266 8 Norwalk CT 4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2015-08-17   
475-273 3 Bridgeport CT 4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2020-09-06   
475-282 2 Bridgeport CT 4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2011-12-22   
475-288 A Norwalk CT 4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920      
475-288 1 Norwalk CT 4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2014-11-24   

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

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