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: 643

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
203-643 A Branford CT HRFRCT03Y2X  829J PAETEC ITEL, LLC 920      
203-643 0 Branford CT HRFRCT03Y2X  829J PAETEC ITEL, LLC 920      
203-643 1 Branford CT HRFRCT03Y2X  829J PAETEC ITEL, LLC 920      
203-643 2 Branford CT HRFRCT03Y2X  829J PAETEC ITEL, LLC 920      
203-643 3 Branford CT HRFRCT03Y2X  829J PAETEC ITEL, LLC 920      
203-643 4 Branford CT HRFRCT03Y2X  829J PAETEC ITEL, LLC 920      
203-643 5 Branford CT HRFRCTASDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 920   2003-06-18   
203-643 6 Branford CT HRFRCT03Y0X  829J PAETEC ITEL, LLC 920   2013-12-13   
203-643 7 Branford CT HRFRCT03Y2X  829J PAETEC ITEL, LLC 920   2011-03-23   
203-643 8 Branford CT SMFRCTPU4MD  4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2004-03-07   
203-643 9 Branford CT HRFRCT03Y0X  829J PAETEC ITEL, LLC 920   2008-12-17   

Last updated: Sat, 01 Aug 2026 03:19:33 UTC

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