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: 959 [Rate centres in NPA 959] [Dial plan for NPA 959]

NXX: 610

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
959-610 A Harwinton CT NWHNCT02XJX  624H ONVOY SPECTRUM, LLC 920      
959-610 0 Harwinton CT NWHNCT02XJX  624H ONVOY SPECTRUM, LLC 920   2021-04-17   
959-610 1 Harwinton CT HRFRCT0389Z  490J BOOST SUBSCRIBERCO L.L.C. 920   2022-12-20   
959-610 3 Harwinton CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2021-04-18   
959-610 4 Harwinton CT HRFRCTBCDS1  639C ONVOY, LLC - CT 920   2021-04-18   
959-610 5 Harwinton CT NWHNCT02XJX  624H ONVOY SPECTRUM, LLC 920   2022-02-20   
959-610 8 Harwinton CT HRFRCTBC6MD  515J IP HORIZON LLC 920   2024-07-15   
959-610 9 Harwinton CT   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 920   2026-04-03   

Last updated: Sat, 21 Mar 2026 23:53:39 UTC

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.