Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
203-717 A Greenwich CT WHPLNYWPFMD  132      
203-717 1 Greenwich CT WHPLNYWPFMD  132   2011-03-28   
203-724 9 Stamford CT NRWLCT02SMD  920   2013-03-18   
203-762 6 Wilton CT NRWLCT02SMD  920   2013-07-17   
203-769 1 Greenwich CT GNWCCTGNCMD  132   2010-07-23   
203-769 5 Greenwich CT GNWCCTGNCMD  132   2007-04-03   
203-810 4 Norwalk CT NRWLCT02SMD  920   2007-06-10   
203-813 3 Byram CT GNWCCTGNCMD  132   2005-04-22   
203-817 0 Stamford CT NRWLCT02SMD  920   2011-12-05   
203-857 1 Norwalk CT NRWLCT02SMD  920   2014-05-03   
203-870 0 Bridgeport CT NRWLCT02SMD  920      
203-870 1 Bridgeport CT NRWLCT02SMD  920      
203-870 4 Bridgeport CT NRWLCT02SMD  920   2006-04-10   
203-870 6 Bridgeport CT NRWLCT02SMD  920      
203-870 8 Bridgeport CT NRWLCT02SMD  920      
203-870 9 Bridgeport CT NRWLCT02SMD  920      
203-873 0 Bridgeport CT NRWLCT02SMD  920   2007-11-08   
203-883 8 Stamford CT NRWLCT02SMD  920   2007-07-13   
203-890 9 Stamford CT NRWLCT02SMD  920   2014-05-16   
203-900 A Greenwich CT WHPLNYWPXZX  132      
203-900 1 Greenwich CT WHPLNYWPXZX  132   2012-04-23   
203-908 3 Bridgeport CT NRWLCT02SMD  920   2007-07-13   
203-908 4 Bridgeport CT NRWLCT02SMD  920   2007-07-13   
203-914 A Stamford CT NRWLCT02NMD  920      
203-914 1 Stamford CT NRWLCT02NMD  920   2012-04-23   
203-916 7 Bridgeport CT NRWLCT02SMD  920   2011-04-22   
203-920 1 New Canaan CT NRWLCT02SMD  920   2011-08-26   
203-923 1 Bridgeport CT NRWLCT02SMD  920   2006-02-16   
203-923 2 Bridgeport CT NRWLCT02SMD  920   2005-03-10   
203-923 8 Bridgeport CT NRWLCT02SMD  920   2005-03-10   
203-939 A Norwalk CT NRWLCT02SMD  920      
203-939 1 Norwalk CT NRWLCT02SMD  920   2008-08-28   
203-939 9 Norwalk CT NRWLCT02SMD  920   2012-09-28   
203-955 1 Fairfield CT NRWLCT02SMD  920   2011-04-22   
203-956 0 Norwalk CT NRWLCT02SMD  920   2006-06-19   
203-957 A Norwalk CT NRWLCT02PMD  920      
203-957 3 Norwalk CT NRWLCT02SMD  920   2011-07-22   
203-957 8 Norwalk CT NRWLCT02SMD  920   2013-04-05   
203-990 0 Old Greenwich CT NRWLCT02SMD  920   2007-11-16   
203-990 3 Old Greenwich CT NRWLCT02SMD  920   2013-09-14   
203-992 A Greenwich CT GNWCCTGNCMD  132      
203-992 1 Greenwich CT GNWCCTGNCMD  132   2006-07-03   
203-998 7 Stamford CT NRWLCT02SMD  920   2013-08-09   
214-242 A Dallas TX DLLSTXRIXYY  552      
214-242 7 Dallas TX   552   2004-06-10   
214-272 1 Dallas TX   552   2008-03-31   
214-304 A Rockwall TX DLLSTXRIXYY  552      
214-304 3 Rockwall TX   552   2014-03-29   
214-305 A Prosper TX DLLSTXRIXYY  552      
214-305 3 Prosper TX   552   2014-03-29   

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Last updated: Sat, 10 Oct 2026 15:24:20 UTC

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