Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
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Switch: GNWCCTGNDSN

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
203-485 0 Greenwich CT 4950 CABLEVISION LIGHTPATH, INC. - CT 132      
203-485 1 Greenwich CT 4950 CABLEVISION LIGHTPATH, INC. - CT 132      
203-485 3 Greenwich CT 4950 CABLEVISION LIGHTPATH, INC. - CT 132      
203-485 4 Greenwich CT 4950 CABLEVISION LIGHTPATH, INC. - CT 132      
203-485 5 Greenwich CT 4950 CABLEVISION LIGHTPATH, INC. - CT 132      
203-485 7 Greenwich CT 4950 CABLEVISION LIGHTPATH, INC. - CT 132      
203-485 8 Greenwich CT 4950 CABLEVISION LIGHTPATH, INC. - CT 132      
203-485 9 Greenwich CT 4950 CABLEVISION LIGHTPATH, INC. - CT 132      

Last updated: Thu, 20 Nov 2025 13:34:34 UTC

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