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: 530

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
860-530 A Columbia CT HRFRCTCR3MD  318J COMCAST IP PHONE, LLC 920      
860-530 0 Columbia CT   639C ONVOY, LLC - CT 920   2019-08-09   
860-530 1 Columbia CT   318J COMCAST IP PHONE, LLC 920      
860-530 2 Columbia CT   639C ONVOY, LLC - CT 920   2020-06-21   
860-530 3 Columbia CT   318J COMCAST IP PHONE, LLC 920   2015-03-20   
860-530 4 Columbia CT   639C ONVOY, LLC - CT 920   2020-02-28   
860-530 5 Columbia CT   639C ONVOY, LLC - CT 920   2020-02-28   
860-530 6 Columbia CT   639C ONVOY, LLC - CT 920   2020-06-21   
860-530 7 Columbia CT   199F BANDWIDTH.COM CLEC, LLC - CT 920   2020-06-05   
860-530 8 Columbia CT   639C ONVOY, LLC - CT 920   2019-08-09   
860-530 9 Columbia CT   073H TELNYX LLC 920   2018-05-09   

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.