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: 860 [Rate centres in NPA 860] [Dial plan for NPA 860]

NXX: 421

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
860-421 A Canton CT HRFRCTCRDS0  7143 TELEPORT COMMUNICATIONS AMERICA, LLC - CT 920      
860-421 0 Canton CT HRFRCT0380Z  539F PEERLESS NETWORK OF CONNECTICUT, LLC - CT 920   2013-05-03   
860-421 1 Canton CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2019-03-29   
860-421 2 Canton CT HRFRCTCRDS0  7143 TELEPORT COMMUNICATIONS AMERICA, LLC - CT 920      
860-421 3 Canton CT HRFRCT0379Z  199F BANDWIDTH.COM CLEC, LLC - CT 920   2015-02-13   
860-421 4 Canton CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2015-05-16   
860-421 5 Canton CT HRFRCT03GT0  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920   2011-04-25   
860-421 6 Canton CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2016-04-11   
860-421 7 Canton CT NWLNCTCS6MD  508J CENTURYLINK COMMUNICATIONS LLC 920   2014-07-08   
860-421 8 Canton CT HRFRCT0380Z  539F PEERLESS NETWORK OF CONNECTICUT, LLC - CT 920   2013-05-03   
860-421 9 Canton CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2016-04-11   

Last updated: Fri, 23 Jul 2021 12:43:22 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.