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: 616

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
203-616 A Danbury CT   4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920      
203-616 0 Danbury CT   6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920   2005-11-03   
203-616 1 Danbury CT   829J PAETEC ITEL, LLC 920   2004-07-22   
203-616 2 Danbury CT   4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920      
203-616 3 Danbury CT   4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920      
203-616 4 Danbury CT   4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920      
203-616 5 Danbury CT   318J COMCAST IP PHONE, LLC 920   2007-08-06   
203-616 6 Danbury CT   829J PAETEC ITEL, LLC 920   2004-07-22   
203-616 7 Danbury CT   829J PAETEC ITEL, LLC 920   2004-07-22   
203-616 8 Danbury CT   829J PAETEC ITEL, LLC 920   2004-07-22   
203-616 9 Danbury CT   145J TERRA NOVA TELECOM INC. 920   2025-07-24   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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