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.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

NPA: 203 [Rate centres in NPA 203] [Dial plan for NPA 203]

NXX:

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
203-805 A Waterbury CT HRFRCTCRDS0  7143 TELEPORT COMMUNICATIONS AMERICA, LLC - CT 920      
203-805 0 Waterbury CT   7143 TELEPORT COMMUNICATIONS AMERICA, LLC - CT 920      
203-805 1 Waterbury CT   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 920   2011-01-24   
203-805 2 Waterbury CT   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 920   2011-01-24   
203-805 3 Waterbury CT   6664 SPRINT SPECTRUM L.P. 920   2011-01-13   
203-805 4 Waterbury CT   7621 COMCAST PHONE OF CONNECTICUT, INC. - CT 920   2010-09-10   
203-805 5 Waterbury CT   7143 TELEPORT COMMUNICATIONS AMERICA, LLC - CT 920      
203-805 6 Waterbury CT   7143 TELEPORT COMMUNICATIONS AMERICA, LLC - CT 920      
203-805 7 Waterbury CT   199F BANDWIDTH.COM CLEC, LLC - CT 920   2015-01-11   
203-805 8 Waterbury CT   199F BANDWIDTH.COM CLEC, LLC - CT 920   2008-11-29   
203-805 9 Waterbury CT   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 920   2010-11-22   

Last updated: Thu, 10 Sep 2020 02:15:24 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.