Local Calling Guide

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Search area code/prefix (NPA/NXX)
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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
203-202 7 Darien CT 612K CSC VOICE, LLC 920      
203-202 9 Darien CT 612K CSC VOICE, LLC 920      
203-210 5 Wilton CT 612K CSC VOICE, LLC 920      
203-210 7 Wilton CT 612K CSC VOICE, LLC 920      
203-212 3 Bridgeport CT 612K CSC VOICE, LLC 920   2010-07-23   
203-220 5 Trumbull CT 612K CSC VOICE, LLC 920      
203-220 9 Trumbull CT 612K CSC VOICE, LLC 920      
203-228 5 Waterbury CT 612K CSC VOICE, LLC 920   2003-07-14   
203-244 A Ridgefield CT 612K CSC VOICE, LLC 920      
203-244 3 Ridgefield CT 612K CSC VOICE, LLC 920   2003-05-19   
203-274 5 Stamford CT 612K CSC VOICE, LLC 920   2003-07-01   
203-274 6 Stamford CT 612K CSC VOICE, LLC 920   2004-03-01   
203-274 7 Stamford CT 612K CSC VOICE, LLC 920   2007-08-10   
203-275 8 Bridgeport CT 612K CSC VOICE, LLC 920   2008-04-11   
203-276 0 Stamford CT 612K CSC VOICE, LLC 920   2003-05-19   
203-276 1 Stamford CT 612K CSC VOICE, LLC 920   2003-05-19   
203-276 9 Stamford CT 612K CSC VOICE, LLC 920   2003-05-19   
203-283 1 Milford CT 612K CSC VOICE, LLC 920      
203-283 3 Milford CT 4950 CABLEVISION LIGHTPATH, INC. - CT 920      
203-283 4 Milford CT 612K CSC VOICE, LLC 920      
203-283 5 Milford CT 612K CSC VOICE, LLC 920      
203-283 7 Milford CT 612K CSC VOICE, LLC 920      
203-283 9 Milford CT 4950 CABLEVISION LIGHTPATH, INC. - CT 920      
203-286 6 Norwalk CT 612K CSC VOICE, LLC 920   2007-09-20   
203-286 7 Norwalk CT 612K CSC VOICE, LLC 920   2007-09-20   
203-286 8 Norwalk CT 612K CSC VOICE, LLC 920   2007-09-20   
203-290 4 Bridgeport CT 612K CSC VOICE, LLC 920   2014-05-02   
203-292 3 Fairfield CT 612K CSC VOICE, LLC 920      
203-292 5 Fairfield CT 612K CSC VOICE, LLC 920      
203-292 6 Fairfield CT 612K CSC VOICE, LLC 920      
203-292 8 Fairfield CT 612K CSC VOICE, LLC 920      
203-292 9 Fairfield CT 612K CSC VOICE, LLC 920      
203-293 4 Westport CT 612K CSC VOICE, LLC 920   2007-12-07   
203-295 8 Norwalk CT 612K CSC VOICE, LLC 920   2011-05-05   
203-296 1 Bridgeport CT 612K CSC VOICE, LLC 920   2006-04-16   
203-296 2 Bridgeport CT 612K CSC VOICE, LLC 920   2006-04-16   
203-296 4 Bridgeport CT 612K CSC VOICE, LLC 920   2007-04-21   
203-296 9 Bridgeport CT 612K CSC VOICE, LLC 920   2006-04-16   
203-298 4 New Haven CT 612K CSC VOICE, LLC 920      
203-298 9 New Haven CT 612K CSC VOICE, LLC 920      
203-301 4 Milford CT 612K CSC VOICE, LLC 920   2007-11-08   
203-309 5 Darien CT 612K CSC VOICE, LLC 920   2011-08-19   
203-344 1 Old Greenwich CT 612K CSC VOICE, LLC 920      
203-349 5 Westport CT 612K CSC VOICE, LLC 920   2010-09-23   
203-362 5 Bridgeport CT 612K CSC VOICE, LLC 920   2006-02-16   
203-388 8 Stamford CT 612K CSC VOICE, LLC 920   2008-04-11   
203-406 7 Stamford CT 612K CSC VOICE, LLC 920   2010-07-23   
203-502 1 Bridgeport CT 612K CSC VOICE, LLC 920   2005-04-21   
203-504 2 Stamford CT 612K CSC VOICE, LLC 920   2007-09-20   
203-504 8 Stamford CT 612K CSC VOICE, LLC 920   2007-09-20   
203-517 9 Stamford CT 612K CSC VOICE, LLC 920   2008-03-07   
203-522 4 Bridgeport CT 612K CSC VOICE, LLC 920   2004-10-28   
203-522 5 Bridgeport CT 612K CSC VOICE, LLC 920   2004-10-28   
203-529 3 Wilton CT 612K CSC VOICE, LLC 920   2009-09-19   
203-540 5 Bridgeport CT 612K CSC VOICE, LLC 920   2006-04-10   
203-549 8 Bridgeport CT 612K CSC VOICE, LLC 920   2005-04-21   
203-549 9 Bridgeport CT 612K CSC VOICE, LLC 920   2005-04-21   
203-553 9 New Haven CT 612K CSC VOICE, LLC 920   2011-08-26   
203-557 0 Westport CT 612K CSC VOICE, LLC 920      
203-557 3 Westport CT 612K CSC VOICE, LLC 920      
203-557 4 Westport CT 612K CSC VOICE, LLC 920      
203-557 6 Westport CT 612K CSC VOICE, LLC 920   2015-07-25   
203-557 8 Westport CT 612K CSC VOICE, LLC 920      
203-569 3 Stamford CT 612K CSC VOICE, LLC 920      
203-569 7 Stamford CT 612K CSC VOICE, LLC 920      
203-569 9 Stamford CT 612K CSC VOICE, LLC 920      
203-572 0 Bridgeport CT 612K CSC VOICE, LLC 920   2007-12-21   
203-586 3 Woodbury CT 612K CSC VOICE, LLC 920   2003-12-15   
203-587 A Georgetown CT 612K CSC VOICE, LLC 920      
203-587 1 Georgetown CT 612K CSC VOICE, LLC 920      
203-587 9 Georgetown CT 612K CSC VOICE, LLC 920      
203-594 1 New Canaan CT 612K CSC VOICE, LLC 920      
203-594 7 New Canaan CT 612K CSC VOICE, LLC 920      
203-594 9 New Canaan CT 612K CSC VOICE, LLC 920      
203-595 5 Stamford CT 612K CSC VOICE, LLC 920   2011-04-22   
203-612 1 Bridgeport CT 612K CSC VOICE, LLC 920   2005-03-10   
203-612 4 Bridgeport CT 612K CSC VOICE, LLC 920   2006-01-22   
203-612 6 Bridgeport CT 612K CSC VOICE, LLC 920   2004-11-06   
203-612 7 Bridgeport CT 612K CSC VOICE, LLC 920   2004-11-06   
203-612 8 Bridgeport CT 612K CSC VOICE, LLC 920   2004-11-06   
203-614 8 Stamford CT 612K CSC VOICE, LLC 920   2011-08-26   
203-642 3 Norwalk CT 612K CSC VOICE, LLC 920   2006-11-13   
203-642 4 Norwalk CT 612K CSC VOICE, LLC 920   2003-07-21   
203-658 8 Stamford CT 612K CSC VOICE, LLC 920   2012-08-18   
203-664 1 Redding CT 612K CSC VOICE, LLC 920      
203-664 4 Redding CT 612K CSC VOICE, LLC 920   2013-06-08   
203-674 8 Stamford CT 612K CSC VOICE, LLC 920   2010-12-02   
203-690 1 Bridgeport CT 612K CSC VOICE, LLC 920   2011-12-24   
203-693 2 Milford CT 612K CSC VOICE, LLC 920   2013-06-08   
203-693 3 Milford CT 612K CSC VOICE, LLC 920   2011-06-24   
203-713 8 Milford CT 612K CSC VOICE, LLC 920   2010-06-25   
203-724 9 Stamford CT 612K CSC VOICE, LLC 920   2013-03-18   
203-762 6 Wilton CT 612K CSC VOICE, LLC 920   2013-07-17   
203-810 4 Norwalk CT 612K CSC VOICE, LLC 920   2007-06-10   
203-817 0 Stamford CT 612K CSC VOICE, LLC 920   2011-12-05   
203-857 1 Norwalk CT 612K CSC VOICE, LLC 920   2014-05-03   
203-870 0 Bridgeport CT 612K CSC VOICE, LLC 920      
203-870 1 Bridgeport CT 612K CSC VOICE, LLC 920      
203-870 4 Bridgeport CT 612K CSC VOICE, LLC 920   2006-04-10   
203-870 6 Bridgeport CT 612K CSC VOICE, LLC 920      

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

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