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: 390

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
860-390 A Lyme CT HRFRCT0380Z  539F PEERLESS NETWORK OF CONNECTICUT, LLC - CT 920      
860-390 0 Lyme CT   539F PEERLESS NETWORK OF CONNECTICUT, LLC - CT 920   2013-06-07   
860-390 1 Lyme CT   539F PEERLESS NETWORK OF CONNECTICUT, LLC - CT 920   2013-06-07   
860-390 2 Lyme CT   639C ONVOY, LLC - CT 920   2015-05-15   
860-390 3 Lyme CT   539F PEERLESS NETWORK OF CONNECTICUT, LLC - CT 920   2018-12-13   
860-390 4 Lyme CT   639C ONVOY, LLC - CT 920   2019-08-09   
860-390 5 Lyme CT   639C ONVOY, LLC - CT 920   2019-08-09   
860-390 6 Lyme CT   318J COMCAST IP PHONE, LLC 920   2014-04-11   
860-390 7 Lyme CT   508J CENTURYLINK COMMUNICATIONS, LLC 920   2014-07-09   
860-390 8 Lyme CT   466E IDT AMERICA, CORP. - CT 920   2018-01-07   
860-390 9 Lyme CT   073H TELNYX LLC 920   2018-05-09   

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

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.