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: 717

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
860-717 A New Milford CT HRFRCT0383Z  7143 TELEPORT COMMUNICATIONS AMERICA, LLC - CT 920      
860-717 0 New Milford CT   199F BANDWIDTH.COM CLEC, LLC - CT 920   2010-09-09   
860-717 1 New Milford CT   5562 METROPCS, INC. 920   2011-03-29   
860-717 2 New Milford CT   199F BANDWIDTH.COM CLEC, LLC - CT 920   2011-06-01   
860-717 3 New Milford CT   639C ONVOY, LLC - CT 920   2015-05-15   
860-717 4 New Milford CT   792K CHARTER IP ENABLED SERVICES, LLC 920   2016-09-08   
860-717 5 New Milford CT   515J IP HORIZON LLC 920   2024-07-18   
860-717 6 New Milford CT   7143 TELEPORT COMMUNICATIONS AMERICA, LLC - CT 920   2010-05-28   
860-717 7 New Milford CT   4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920   2012-08-26   
860-717 8 New Milford CT   539F PEERLESS NETWORK OF CONNECTICUT, LLC - CT 920   2013-05-03   
860-717 9 New Milford CT   539F PEERLESS NETWORK OF CONNECTICUT, LLC - CT 920   2013-05-03   

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.