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: 605

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
860-605 A Harwinton CT HRFRCTCRDS0  7143 TELEPORT COMMUNICATIONS AMERICA, LLC - CT 920      
860-605 0 Harwinton CT MDTWCTNIBMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 920   2003-09-17   
860-605 1 Harwinton CT HRFRCTCRDS0  7143 TELEPORT COMMUNICATIONS AMERICA, LLC - CT 920      
860-605 2 Harwinton CT HRFRCTASDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 920   2003-06-18   
860-605 3 Harwinton CT MDTWCTNIBMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 920   2003-10-26   
860-605 4 Harwinton CT MDTWCTNIBMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 920   2003-10-26   
860-605 5 Harwinton CT MDTWCTNIBMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 920   2004-03-06   
860-605 6 Harwinton CT MDTWCTNIBMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 920   2004-03-06   
860-605 7 Harwinton CT MDTWCTNIBMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 920   2004-03-06   
860-605 8 Harwinton CT MDTWCTNIBMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 920   2006-12-11   
860-605 9 Harwinton CT WLMNCT132MD  792K CHARTER IP ENABLED SERVICES, LLC 920   2005-01-17   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.