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: 304

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
203-304 A Newtown CT HRFRCTCRDS0  7143 TELEPORT COMMUNICATIONS AMERICA, LLC - CT 920      
203-304 0 Newtown CT HRFRCTCRDS0  7143 TELEPORT COMMUNICATIONS AMERICA, LLC - CT 920      
203-304 1 Newtown CT WLMNCT132MD  792K CHARTER IP ENABLED SERVICES, LLC 920   2005-01-17   
203-304 2 Newtown CT   829J PAETEC ITEL, LLC 920   2004-10-15   
203-304 3 Newtown CT HRFRCTCRDS0  7143 TELEPORT COMMUNICATIONS AMERICA, LLC - CT 920      
203-304 4 Newtown CT   829J PAETEC ITEL, LLC 920   2006-04-13   
203-304 5 Newtown CT   829J PAETEC ITEL, LLC 920   2007-05-11   
203-304 6 Newtown CT SMFRCTPU4MD  4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2008-05-16   
203-304 7 Newtown CT SMFRCTPU4MD  4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2005-12-19   
203-304 8 Newtown CT NWHNCT02GT0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920   2007-09-07   
203-304 9 Newtown CT WLMNCT132MD  792K CHARTER IP ENABLED SERVICES, LLC 920   2007-12-09   

Last updated: Sun, 01 Jun 2025 02:18:11 UTC

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