Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 203 [Rate centres in NPA 203] [Dial plan for NPA 203]

NXX: 504

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
203-504 A Stamford CT   829J PAETEC ITEL, LLC 920      
203-504 0 Stamford CT BLFDCTAP2MD  6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920   2004-04-15   
203-504 1 Stamford CT   829J PAETEC ITEL, LLC 920   2004-04-04   
203-504 2 Stamford CT NRWLCT028MD  4950 CABLEVISION LIGHTPATH, INC. - CT 920   2007-09-20   
203-504 3 Stamford CT   829J PAETEC ITEL, LLC 920   2004-12-02   
203-504 4 Stamford CT BLFDCTAP2MD  6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920   2005-02-28   
203-504 5 Stamford CT   829J PAETEC ITEL, LLC 920   2005-04-18   
203-504 6 Stamford CT   829J PAETEC ITEL, LLC 920   2006-02-04   
203-504 7 Stamford CT SMFRCTPU4MD  4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2006-05-05   
203-504 8 Stamford CT NRWLCT028MD  4950 CABLEVISION LIGHTPATH, INC. - CT 920   2007-09-20   
203-504 9 Stamford CT SMFRCTPU4MD  4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2006-01-08   

Last updated: Sun, 27 Apr 2025 12:48:38 UTC

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