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: 777

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
860-777 A Farmington CT   4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920      
860-777 0 Farmington CT   639C ONVOY, LLC - CT 920   2019-06-14   
860-777 1 Farmington CT   639C ONVOY, LLC - CT 920   2015-05-09   
860-777 2 Farmington CT   4800 LEVEL 3 COMMUNICATIONS, LLC - CT 920      
860-777 4 Farmington CT   539F PEERLESS NETWORK OF CONNECTICUT, LLC - CT 920   2020-01-15   
860-777 5 Farmington CT   5562 METROPCS, INC. 920   2003-03-25   
860-777 6 Farmington CT   6624 OMNIPOINT COMMUNICATIONS, INC. - CT 920   2003-03-25   
860-777 7 Farmington CT   5562 METROPCS, INC. 920   2003-03-25   
860-777 8 Farmington CT   5562 METROPCS, INC. 920   2003-03-25   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.