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: 774

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
203-774 A Wallingford CT HRFRCT0370Z  2706 CHOICE ONE COMMUNICATIONS, INC. - CT 920      
203-774 0 Wallingford CT HRFRCT0370Z  2706 CHOICE ONE COMMUNICATIONS, INC. - CT 920      
203-774 1 Wallingford CT HRFRCT0370Z  2706 CHOICE ONE COMMUNICATIONS, INC. - CT 920      
203-774 2 Wallingford CT HRFRCT0370Z  2706 CHOICE ONE COMMUNICATIONS, INC. - CT 920      
203-774 3 Wallingford CT SMFRCTPU4MD  4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2005-02-04   
203-774 4 Wallingford CT SMFRCTPU4MD  4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2003-08-12   
203-774 5 Wallingford CT SMFRCTPU4MD  4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2011-08-27   
203-774 6 Wallingford CT NWLNCTCS6MD  508J CENTURYLINK COMMUNICATIONS, LLC 920   2014-07-16   
203-774 7 Wallingford CT HRFRCT0370Z  2706 CHOICE ONE COMMUNICATIONS, INC. - CT 920      
203-774 8 Wallingford CT HRFRCT0370Z  2706 CHOICE ONE COMMUNICATIONS, INC. - CT 920      
203-774 9 Wallingford CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2016-05-04   

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.