Local Calling Guide

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

NXX: 463

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
203-463 A Seymour CT HRFRCTCRDS0  7143 TELEPORT COMMUNICATIONS AMERICA, LLC - CT 920      
203-463 0 Seymour CT NWHNCT02GT0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920   2010-03-23   
203-463 1 Seymour CT HRFRCTCRDS0  7143 TELEPORT COMMUNICATIONS AMERICA, LLC - CT 920      
203-463 2 Seymour CT SMFRCTPU4MD  4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2005-12-18   
203-463 3 Seymour CT   829J PAETEC ITEL, LLC 920   2005-08-26   
203-463 4 Seymour CT SMFRCTPU4MD  4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2004-12-12   
203-463 5 Seymour CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2019-02-18   
203-463 6 Seymour CT HRFRCTASDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 920   2008-08-01   
203-463 7 Seymour CT   829J PAETEC ITEL, LLC 920   2003-09-16   
203-463 8 Seymour CT HRFRCTCR3MD  318J COMCAST IP PHONE, LLC 920   2006-11-22   
203-463 9 Seymour CT   829J PAETEC ITEL, LLC 920   2002-02-22   

Last updated: Wed, 18 Jun 2025 02:30:00 UTC

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