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: 783

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
860-783 A Manchester CT   639C ONVOY, LLC - CT 920      
860-783 0 Manchester CT   9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920   2014-09-24   
860-783 1 Manchester CT   639C ONVOY, LLC - CT 920   2019-02-14   
860-783 4 Manchester CT   199F BANDWIDTH.COM CLEC, LLC - CT 920   2020-02-24   
860-783 5 Manchester CT   318J COMCAST IP PHONE, LLC 920   2007-09-05   
860-783 6 Manchester CT   639C ONVOY, LLC - CT 920   2016-03-23   
860-783 7 Manchester CT   639C ONVOY, LLC - CT 920   2016-03-23   
860-783 8 Manchester CT   318J COMCAST IP PHONE, LLC 920   2010-06-08   
860-783 9 Manchester CT   145J TERRA NOVA TELECOM INC. 920   2025-05-05   

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

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.